随机30道小学计算题03

设计思路：

本次实验在实验二的基础上完成，新增功能：判断结果是否正确。

使用结构体存储算式：

struct equation{ //定义结构体“算式”equation

    double value; //值value，用于存算式的值

    int num; //当前算式为num元运算

    bool isFraction; //标记是否为分数

    string shape; //形式shape，用于存算式形式

}Equation[9999];

主要函数：

void getRequirement()：记录用户需求，即可定制（数量/打印方式）、是否有乘除法、是否有括号（最多可以支持十个数参与计算）、数值范围、加减有无负数、除法有无余数。

void CreateEquation()：生成初始算式。这里生成二元运算，并随机决定算式是整数算式还是分数算式以及是否继续加长算式。

void MakeBrackets(equation*)：加括号。随机增加运算符和运算数，随机决定是否继续加长算式。递归函数。

void Print()：输出并评判结果。包括屏幕输出和文件输出。分数输出分行。对结果评判精度为10^-2。

void absoluteValue(int &numfirst, int &numsecond)：绝对值。用来调整真分数。

代码：

//2016/03/06
//打印100以内四则运算式，包含真分数。
//2016/03/11
//新增：题目避免重复；可定制（数量/打印方式）；可以控制以下参数：
//是否有乘除法；是否有括号（最多可以支持十个数参与计算）；数值范围；
//加减有无负数；除法有无余数；
#include<iostream>
#include<fstream>
#include <stdio.h>
#include <stdlib.h>
#include<string>
#include<random>
#include<cmath>
#include<ctime>
#include<conio.h>
#include<windows.h>
using namespace std;

int NUM_equation = 0;               //打印数量
bool PrintToFile;               //是否输出到文件
bool HasMultAndDivi;            //是否有乘除法
bool HasBrackets;               //是否有括号
bool HasNegative;               //加减是否有负数
bool HasRemainder;              //除法是否有余数
int MaxOfRange = 100;                 //数值范围上限
int MinOfRange = -100;                 //数值范围下限

//int NUM_equation = 20;               //打印数量
//bool PrintToFile = false;               //是否输出到文件
//bool HasMultAndDivi = true;            //是否有乘除法
//bool HasBrackets = true;               //是否有括号
//bool HasNegative = true;               //加减是否有负数
//bool HasRemainder = true;              //除法是否有余数
//int MaxOfRange = 100;                 //数值范围上限
//int MinOfRange = -100;                 //数值范围下限
default_random_engine generator;
uniform_int_distribution<int> distribution(MinOfRange, MaxOfRange);
struct equation{                //定义结构体“算式”equation

    double value;               //值value，用于存算式的值
    int num;                    //当前算式为num元运算
    bool isFraction;            //标记是否为分数
    string shape;               //形式shape，用于存算式形式
}Equation[9999];

void MakeBrackets(equation*);

void absoluteValue(int &numfirst, int &numsecond)
{
    int tonumf;          //第一个数的绝对值
    int tonums;
    int flag_1;
    int flag_2;
    int temp;
    if (numfirst < 0)
    {
        tonumf = 0 - numfirst;
        flag_1 = -1;
    }
    else
    {
        tonumf = numfirst;
        flag_1 = 1;
    }
    if (numsecond < 0)
    {
        tonums = 0 - numsecond;
        flag_2 = -1;
    }
    else
    {
        tonums = numsecond;
        flag_2 = 1;
    }
    if (tonums < tonumf)
    {
        temp = tonumf;
        tonumf = tonums;
        tonums = temp;
    }
    int i;
    for (i = tonumf; i > 0; i--)
    {
        if (tonumf%i == 0 && tonums%i == 0)
        {
            break;
        }
    }
    if (i)
    {
        numfirst = tonumf / i;
        numsecond = tonums / i;
    }
    else
    {
        numfirst = tonumf;
        numsecond = tonums;
    }
    if (flag_1*flag_2 < 0)
    {
        numfirst = 0 - numfirst;
    }
}

void getRequirement()                    //输入要求
{
    string buffer;
    bool flag_NUM_right = false;
    do{
        cout << "请选择打印数量（1-9999整数）：";
        cin >> buffer;
        int i;
        if (buffer.length() < 5)
        {
            for (i = 0; i < buffer.length(); i++)                 //判断是否为数字
            {
                if (buffer[i] < 48 || buffer[i]>57)
                {
                    break;                                      //不是数字则跳出
                }
            }
            if (i == buffer.length())                             //如果没有跳出（都是数字）
            {
                if (buffer[0] != '0')
                {
                    for (i = 0; i < buffer.length(); i++)         //字符转为整形
                    {
                        NUM_equation += (buffer[i] - 48)*pow(10, buffer.length() - 1 - i);
                    }
                    flag_NUM_right = true;
                }
            }
        }
    } while (!flag_NUM_right);

    bool flag_Print_right = false;
    do{
        cout << "请选择输出方式（1.屏幕/2.文件）：";
        switch (getche())
        {
        case 49:                                        //'1'
            PrintToFile = false;
            flag_Print_right = true;
            cout << endl;
            break;
        case 50:                                        //'2'
            PrintToFile = true;
            flag_Print_right = true;
            cout << endl;
            break;
        default:
            cout << endl;
        }
    } while (!flag_Print_right);

    bool flag_MultAndDivi_right = false;
    do{
        cout << "请选择是否有乘除法（Y.有/N.无）：";
        switch (getche())
        {
        case 78:                                                   //'N'
            HasMultAndDivi = false;
            flag_MultAndDivi_right = true;
            cout << endl;
            break;
        case 89:                                                   //'Y'
            HasMultAndDivi = true;
            flag_MultAndDivi_right = true;
            cout << endl;
            break;
        default:
            cout << endl;
        }
    } while (!flag_MultAndDivi_right);


    bool flag_Brackets_right = false;
    do{
        cout << "请选择是否有括号（Y.有/N.无）：";
        switch (getche())
        {
        case 78:                                                   //'N'
            HasBrackets = false;
            flag_Brackets_right = true;
            cout << endl;
            break;
        case 89:                                                   //'Y'
            HasBrackets = true;
            flag_Brackets_right = true;
            cout << endl;
            break;
        default:
            cout << endl;
        }
    } while (!flag_Brackets_right);
    /////////////////////////////////
    string bufferforRage;
    bool flag_Rage_right = false;
    bool isNegative;
    do{
        cout << "请规定数值范围（整数-99999~99999）：上限为：";
        cin >> bufferforRage;
        int i;
        if (bufferforRage[0] == '-')                                         //若可能为负数
        {
            if (bufferforRage.length() < 7)
            {
                for (i = 1; i < bufferforRage.length(); i++)                 //判断是否为数字
                {
                    if (bufferforRage[i] < 48 || bufferforRage[i]>57)
                    {
                        break;                                      //不是数字则跳出
                    }
                }
                if (i == bufferforRage.length())                             //如果没有跳出（都是数字）
                {
                    if (bufferforRage[0] != '0')
                    {
                        for (i = 1; i < bufferforRage.length(); i++)         //字符转为整形
                        {
                            MaxOfRange -= (bufferforRage[i] - 48)*pow(10, bufferforRage.length() - i - 1);
                        }
                        flag_Rage_right = true;
                    }
                }
            }
        }
        if (bufferforRage[0] != '-')                                         //若可能为正数
        {
            if (bufferforRage.length() < 6)
            {
                for (i = 0; i < bufferforRage.length(); i++)                 //判断是否为数字
                {
                    if (bufferforRage[i] < 48 || bufferforRage[i]>57)
                    {
                        break;                                      //不是数字则跳出
                    }
                }
                if (i == bufferforRage.length())                             //如果没有跳出（都是数字）
                {
                    if (bufferforRage[0] != '0')
                    {
                        for (i = 0; i < bufferforRage.length(); i++)         //字符转为整形
                        {
                            MaxOfRange += (bufferforRage[i] - 48)*pow(10, bufferforRage.length() - 1 - i);
                        }
                        flag_Rage_right = true;
                    }
                    else
                    {
                        MaxOfRange = 0;
                        flag_Rage_right = true;
                    }
                }
            }
        }

    } while (!flag_Rage_right);

    flag_Rage_right = false;
    do{
        cout << "下限为：";
        cin >> bufferforRage;
        int i;
        if (bufferforRage[0] == '-')                                         //若可能为负数
        {
            if (bufferforRage.length() < 7)
            {
                for (i = 1; i < bufferforRage.length(); i++)                 //判断是否为数字
                {
                    if (bufferforRage[i] < 48 || bufferforRage[i]>57)
                    {
                        break;                                      //不是数字则跳出
                    }
                }
                if (i == bufferforRage.length())                             //如果没有跳出（都是数字）
                {
                    if (bufferforRage[0] != '0')
                    {
                        for (i = 1; i < bufferforRage.length(); i++)         //字符转为整形
                        {
                            MinOfRange -= (bufferforRage[i] - 48)*pow(10, bufferforRage.length() - i - 1);
                        }
                        if (MinOfRange < MaxOfRange)
                        {
                            flag_Rage_right = true;
                        }
                        else
                        {
                            MinOfRange = 0;
                        }
                    }
                }
            }
        }
        if (bufferforRage[0] != '-')                                         //若可能为正数
        {
            if (bufferforRage.length() < 6)
            {
                for (i = 0; i < bufferforRage.length(); i++)                 //判断是否为数字
                {
                    if (bufferforRage[i] < 48 || bufferforRage[i]>57)
                    {
                        break;                                      //不是数字则跳出
                    }
                }
                if (i == bufferforRage.length())                             //如果没有跳出（都是数字）
                {
                    if (bufferforRage[0] != '0')
                    {
                        for (i = 0; i < bufferforRage.length(); i++)         //字符转为整形
                        {
                            MinOfRange += (bufferforRage[i] - 48)*pow(10, bufferforRage.length() - 1 - i);
                        }
                    }
                    else
                    {
                        MinOfRange = 0;
                    }
                    if (MinOfRange < MaxOfRange)
                    {
                        flag_Rage_right = true;
                    }
                    else
                    {
                        MinOfRange = 0;
                    }
                }
            }
        }

    } while (!flag_Rage_right);

    ///////////////////////////////////


    bool flag_Negative_right = false;
    do{
        cout << "请选择加减是否有负数（Y.有/N.无）：";
        switch (getche())
        {
        case 78:                                                   //'N'
            HasNegative = false;
            flag_Negative_right = true;
            cout << endl;
            break;
        case 89:                                                   //'Y'
            HasNegative = true;
            flag_Negative_right = true;
            cout << endl;
            break;
        default:
            cout << endl;
        }
    } while (!flag_Negative_right);

    if (HasMultAndDivi)
    {
        bool flag_Remainder_right = false;
        do{
            cout << "请选择除法是否有余数（Y.有/N.无）：";
            switch (getche())
            {
            case 78:                                                   //'N'
                HasRemainder = false;
                flag_Remainder_right = true;
                cout << endl;
                break;
            case 89:                                                   //'Y'
                HasRemainder = true;
                flag_Remainder_right = true;
                cout << endl;
                break;
            default:
                cout << endl;
            }
        } while (!flag_Remainder_right);
    }
}

void CreateEquation()
{
    default_random_engine generator;
    uniform_int_distribution<int> distribution(MinOfRange, MaxOfRange);
    for (int i = 0; i < NUM_equation; i++)
    {
        if (rand() % 2 == 0)
        {
            Equation[i].isFraction = false;
        }
        else
        {
             Equation[i].isFraction = true;
        }
        string middle;
        char sign;                                           //生成初始运算符
        do
        {
            switch (rand() % 4)
            {
            case 0:
                sign = '+';
                break;
            case 1:
                sign = '-';
                break;
            case 2:
                sign = '*';
                break;
            case 3:
                sign = '/';
                break;
            }
        } while ((sign == '/' || sign == '*') && !HasMultAndDivi);
        bool wrong = false;
        double value = 0;
        do
        {
            wrong = false;
            if (!Equation[i].isFraction)                        //生成运算数-整数
            {
                int numFormer;
                int numLatter;
                numFormer = distribution(generator);
                do
                {
                    numLatter = distribution(generator);
                } while (numLatter == 0 && sign == '/');
                char strnumFormer[7] = { '0' };
                itoa(numFormer, strnumFormer, 10);
                char strnumLatter[7] = { '0' };
                itoa(numLatter, strnumLatter, 10);
                if (sign == '+' || sign == '-')                            //加减
                {
                    if (HasNegative)
                    {
                        if (sign == '+')
                        {
                            value = numFormer + numLatter;
                        }
                        else
                        {
                            value = numFormer - numLatter;
                        }
                        if (value<MinOfRange || value>MaxOfRange)
                        {
                            wrong = true;
                        }
                        else
                        {
                            middle = strnumFormer;
                            middle = middle + sign;
                            if (numLatter < 0)
                            {
                                middle = middle + '(' + strnumLatter + ')';
                            }
                            else
                            {
                                middle = middle + strnumLatter;
                            }

                            //Equation[i].shape = strnumFormer + sign;
                            //Equation[i].shape = Equation[i].shape + strnumLatter;
                        }
                    }
                    else
                    {
                        if (numFormer < 0 || numLatter < 0)
                        {
                            wrong = true;
                        }
                        else
                        {
                            if (sign == '+')
                            {
                                value = numFormer + numLatter;
                            }
                            else
                            {
                                value = numFormer - numLatter;
                            }
                            if (value<MinOfRange || value>MaxOfRange || value < 0)
                            {
                                wrong = true;
                            }
                            else
                            {
                                middle = strnumFormer;
                                middle = middle + sign;
                                middle = middle + strnumLatter;
                                //Equation[i].shape = strnumFormer + sign;
                                //Equation[i].shape = Equation[i].shape + strnumLatter;
                            }
                        }
                    }
                }
                else if (sign == '*')                                                     //乘
                {
                    value = numFormer*numLatter;
                    if (value<MinOfRange || value>MaxOfRange)
                    {
                        wrong = true;
                    }
                    else
                    {
                        middle = strnumFormer;
                        middle = middle + sign;
                        if (numLatter < 0)
                        {
                            middle = middle + '(' + strnumLatter + ')';
                        }
                        else
                        {
                            middle = middle + strnumLatter;
                        }
                        //Equation[i].shape = strnumFormer + sign;
                        //Equation[i].shape = Equation[i].shape + strnumLatter;
                    }
                }
                else                                                                  //除
                {
                    if (HasRemainder)
                    {
                        value = (double)numFormer / (double)numLatter;
                        if (value<MinOfRange || value>MaxOfRange)
                        {
                            wrong = true;
                        }
                        else
                        {
                            middle = strnumFormer;
                            middle = middle + sign;
                            if (numLatter < 0)
                            {
                                middle = middle + '(' + strnumLatter + ')';
                            }
                            else
                            {
                                middle = middle + strnumLatter;
                            }
                            //Equation[i].shape = strnumFormer + sign;
                            //Equation[i].shape = Equation[i].shape + strnumLatter;
                        }
                    }
                    else
                    {
                        if (numFormer%numLatter != 0)
                        {
                            wrong = true;
                        }
                        else
                        {
                            value = (double)numFormer / (double)numLatter;
                            if (value<MinOfRange || value>MaxOfRange)
                            {
                                wrong = true;
                            }
                            else
                            {
                                middle = strnumFormer;
                                middle = middle + sign;
                                if (numLatter < 0)
                                {
                                    middle = middle + '(' + strnumLatter + ')';
                                }
                                else
                                {
                                    middle = middle + strnumLatter;
                                }
                                //Equation[i].shape = strnumFormer + sign;
                                //Equation[i].shape = Equation[i].shape + strnumLatter;
                            }
                        }
                    }
                }
            }
            else                                               //生成运算数-分数
            {
                int NumeratorFormer;
                int NumeratorLatter;
                int DenominatorFormer;
                int DenominatorLatter;
                do
                {
                    NumeratorFormer = distribution(generator);
                } while (NumeratorFormer == 0);
                do
                {
                    DenominatorFormer = distribution(generator);
                } while (DenominatorFormer == 0 || DenominatorFormer == NumeratorFormer);
                absoluteValue(NumeratorFormer, DenominatorFormer);
                do
                {
                    NumeratorLatter = distribution(generator);
                } while (NumeratorLatter == 0);
                do
                {
                    DenominatorLatter = distribution(generator);
                } while (DenominatorLatter == 0 || DenominatorLatter == NumeratorLatter);
                absoluteValue(NumeratorLatter, DenominatorLatter);
                char strNF[7];
                itoa(NumeratorFormer, strNF, 10);
                char strDF[7];
                itoa(DenominatorFormer, strDF, 10);
                char strNL[7];
                itoa(NumeratorLatter, strNL, 10);
                char strDL[7];
                itoa(DenominatorLatter, strDL, 10);
                if (sign == '+' || sign == '-')                                          //加减
                {
                    if (HasNegative)
                    {
                        if (sign == '+')
                        {
                            value = (double)NumeratorFormer / (double)DenominatorFormer + (double)NumeratorLatter / (double)DenominatorLatter;
                        }
                        else
                        {
                            value = (double)NumeratorFormer / (double)DenominatorFormer - (double)NumeratorLatter / (double)DenominatorLatter;
                        }
                        if (value<MinOfRange || value>MaxOfRange)
                        {
                            wrong = true;
                        }
                        else
                        {
                            middle = strNF;
                            middle = middle + 'd';
                            middle = middle + strDF;
                            middle = middle + sign;
                            middle = middle + strNL;
                            middle = middle + 'd';
                            middle = middle + strDL;
                            //Equation[i].shape = strNF + 'd';
                            //Equation[i].shape = Equation[i].shape + strDF + sign + strNL + 'd' + strDL;
                        }
                    }
                    else
                    {
                        if (NumeratorFormer < 0 || NumeratorLatter < 0)
                        {
                            wrong = true;
                        }
                        else
                        {
                            if (sign == '+')
                            {
                                value = (double)NumeratorFormer / (double)DenominatorFormer + (double)NumeratorLatter / (double)DenominatorLatter;
                            }
                            else
                            {
                                value = (double)NumeratorFormer / (double)DenominatorFormer - (double)NumeratorLatter / (double)DenominatorLatter;
                            }
                            if (value<MinOfRange || value>MaxOfRange || value<0)
                            {
                                wrong = true;
                            }
                            else
                            {
                                middle = strNF;
                                middle = middle + 'd';
                                middle = middle + strDF;
                                middle = middle + sign;
                                middle = middle + strNL;
                                middle = middle + 'd';
                                middle = middle + strDL;
                                //Equation[i].shape = strNF + 'd';
                                //Equation[i].shape = Equation[i].shape + strDF + sign + strNL + 'd' + strDL;
                            }
                        }
                    }
                }
                else                                                         //乘除
                {
                    if (sign == '*')
                    {
                        value = ((double)NumeratorFormer / (double)DenominatorFormer) * ((double)NumeratorLatter / (double)DenominatorLatter);
                    }
                    else
                    {
                        value = ((double)NumeratorFormer / (double)DenominatorFormer) / ((double)NumeratorLatter / (double)DenominatorLatter);
                    }
                    if (value<MinOfRange || value>MaxOfRange)
                    {
                        wrong = true;
                    }
                    else
                    {
                        middle = strNF;
                        middle = middle + 'd';
                        middle = middle + strDF;
                        middle = middle + sign;
                        middle = middle + strNL;
                        middle = middle + 'd';
                        middle = middle + strDL;
                        //Equation[i].shape = strNF + 'd';
                        //Equation[i].shape = Equation[i].shape + strDF + sign + strNL + 'd' + strDL;
                    }
                }
            }
        } while (wrong);
        Equation[i].shape = middle;
        Equation[i].value = value;
        Equation[i].num = 2;
        if (HasBrackets)
        {
            if (rand() % 5 != 0)
            {
                Equation[i].shape = '(' + Equation[i].shape + ')';
                equation *E = &Equation[i];
                MakeBrackets(E);
            }
        }
        //cout << Equation[i].shape << endl;///////////////////////////////////////////////////////
    }
}

void MakeBrackets(equation *thisEquation)                        //加括号
{

    bool wrong = false;
    double value=0;
    string interForShape="";
    do{
        interForShape = (*thisEquation).shape;
        wrong = false;
        if ((*thisEquation).isFraction)                          //若为分数运算
        {
            int numerator;
            int denominator;
            do{
                numerator = distribution(generator);
            } while (numerator == 0);
            do{
                denominator = distribution(generator);
            } while (denominator == 0 || denominator == numerator);
            absoluteValue(numerator, denominator);
            /*if (numerator > denominator)
            {
                int tem;
                tem = numerator;
                numerator = denominator;
                denominator = tem;
            }*/
            char strNumerator[7];
            char strDenominator[7];
            itoa(numerator, strNumerator, 10);
            itoa(denominator, strDenominator, 10);
            switch (rand() % 8)
            {
            case 0:
                if (HasNegative)
                {
                    value = (*thisEquation).value + (double)numerator / (double)denominator;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '+' + interForShape;
                    interForShape = strDenominator + interForShape;
                    interForShape = 'd' + interForShape;
                    interForShape = strNumerator + interForShape;
                }
                else
                {
                    if (numerator > 0 && denominator > 0)
                    {
                        value = (*thisEquation).value + (double)numerator / (double)denominator;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = '+' + interForShape;
                        interForShape = strDenominator + interForShape;
                        interForShape = 'd' + interForShape;
                        interForShape = strNumerator + interForShape;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 1:
                if (HasNegative)
                {
                    value = (*thisEquation).value + (double)numerator / (double)denominator;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '+';
                    interForShape = interForShape + strNumerator;
                    interForShape = interForShape + 'd';
                    interForShape = interForShape + strDenominator;
                }
                else
                {
                    if (numerator > 0 && denominator > 0)
                    {
                        value = (*thisEquation).value + (double)numerator / (double)denominator;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = interForShape + '+';
                        interForShape = interForShape + strNumerator;
                        interForShape = interForShape + 'd';
                        interForShape = interForShape + strDenominator;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 2:
                if (HasNegative)
                {
                    value = (double)numerator / (double)denominator - (*thisEquation).value;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '-' + interForShape;
                    interForShape = strDenominator + interForShape;
                    interForShape = 'd' + interForShape;
                    interForShape = strNumerator + interForShape;
                }
                else
                {
                    if (numerator > 0 && denominator > 0)
                    {
                        value = (double)numerator / (double)denominator - (*thisEquation).value;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = '-' + interForShape;
                        interForShape = strDenominator + interForShape;
                        interForShape = 'd' + interForShape;
                        interForShape = strNumerator + interForShape;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 3:
                if (HasNegative)
                {
                    value = (*thisEquation).value - (double)numerator / (double)denominator;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '-';
                    interForShape = interForShape + strNumerator;
                    interForShape = interForShape + 'd';
                    interForShape = interForShape + strDenominator;
                }
                else
                {
                    if (numerator > 0 && denominator > 0)
                    {
                        value = (double)numerator / (double)denominator - (*thisEquation).value;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = interForShape + '-';
                        interForShape = interForShape + strNumerator;
                        interForShape = interForShape + 'd';
                        interForShape = interForShape + strDenominator;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 4:
                if (HasMultAndDivi)
                {
                    value = (double)numerator / (double)denominator * (*thisEquation).value;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '*' + interForShape;
                    interForShape = strDenominator + interForShape;
                    interForShape = 'd' + interForShape;
                    interForShape = strNumerator + interForShape;
                }
                else
                {
                    wrong = true;
                }
                break;
            case 5:
                if (HasMultAndDivi)
                {
                    value = (*thisEquation).value * (double)numerator / (double)denominator;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '*';
                    interForShape = interForShape + strNumerator;
                    interForShape = interForShape + 'd';
                    interForShape = interForShape + strDenominator;
                }
                else
                {
                    wrong = true;
                }
                break;
            case 6:
                if (HasMultAndDivi)
                {
                    value = (double)numerator / (double)denominator / (*thisEquation).value;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '/' + interForShape;
                    interForShape = strDenominator + interForShape;
                    interForShape = 'd' + interForShape;
                    interForShape = strNumerator + interForShape;
                }
                else
                {
                    wrong = true;
                }
                break;
            case 7:
                if (HasMultAndDivi)
                {
                    value = (*thisEquation).value / ((double)numerator / (double)denominator);
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '/';
                    interForShape = interForShape + strNumerator;
                    interForShape = interForShape + 'd';
                    interForShape = interForShape + strDenominator;
                }
                else
                {
                    wrong = true;
                }
                break;
            }
        }
        else                                                       //若为整数运算
        {
            int integer;
            integer = distribution(generator);
            char strInteger[7];
            itoa(integer, strInteger, 10);
            switch (rand() % 8)
            {
            case 0:
                if (HasNegative)
                {
                    value = (*thisEquation).value + (double)integer;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '+' + interForShape;
                    if (integer < 0)
                    {
                        //interForShape = '(' + strInteger + ')' + interForShape;
                        interForShape = ')' + interForShape;
                        interForShape = strInteger + interForShape;
                        interForShape = '(' + interForShape;
                    }
                    else
                    {
                        interForShape = strInteger + interForShape;
                    }
                }
                else
                {
                    if (integer > 0)
                    {
                        value = (*thisEquation).value + (double)integer;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = '+' + interForShape;
                        interForShape = strInteger + interForShape;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 1:
                if (HasNegative)
                {
                    value = (*thisEquation).value + (double)integer;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '+';
                    if (integer < 0)
                    {
                        //interForShape = interForShape + '(' + strInteger + ')';
                        interForShape = interForShape + '(';
                        interForShape = interForShape + strInteger;
                        interForShape = interForShape + ')';
                    }
                    else
                    {
                        interForShape = interForShape + strInteger;
                    }
                }
                else
                {
                    if (integer > 0)
                    {
                        value = (*thisEquation).value + (double)integer;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = interForShape + '+';
                        interForShape = interForShape + strInteger;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 2:
                if (HasNegative)
                {
                    value = (double)integer - (*thisEquation).value;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '-' + interForShape;
                    if (integer < 0)
                    {
                        //interForShape = '(' + strInteger + ')' + interForShape;
                        interForShape = ')' + interForShape;
                        interForShape = strInteger + interForShape;
                        interForShape = '(' + interForShape;
                    }
                    else
                    {
                        interForShape = strInteger + interForShape;
                    }
                }
                else
                {
                    if (integer > 0)
                    {
                        value = (double)integer - (*thisEquation).value;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = '-' + interForShape;
                        interForShape = strInteger + interForShape;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 3:
                if (HasNegative)
                {
                    value = (*thisEquation).value - (double)integer;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '-';
                    if (integer < 0)
                    {
                        //interForShape = interForShape + '(' + strInteger + ')';
                        interForShape = interForShape + '(';
                        interForShape = interForShape + strInteger;
                        interForShape = interForShape + ')';
                    }
                    else
                    {
                        interForShape = interForShape + strInteger;
                    }
                }
                else
                {
                    if (integer > 0)
                    {
                        value = (*thisEquation).value - (double)integer;
                        if (value > MaxOfRange || value < MinOfRange || value < 0)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = interForShape + '-';
                        interForShape = interForShape + strInteger;
                    }
                    else
                    {
                        wrong = true;
                        break;
                    }
                }
                break;
            case 4:
                if (HasMultAndDivi)
                {
                    value = (double)integer * (*thisEquation).value;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = '*' + interForShape;
                    if (integer < 0)
                    {
                        //interForShape = '(' + strInteger + ')' + interForShape;
                        interForShape = ')' + interForShape;
                        interForShape = strInteger + interForShape;
                        interForShape = '(' + interForShape;
                    }
                    else
                    {
                        interForShape = strInteger + interForShape;
                    }
                }
                else
                {
                    wrong = true;
                }
                break;
            case 5:
                if (HasMultAndDivi)
                {
                    value = (*thisEquation).value * (double)integer;
                    if (value > MaxOfRange || value < MinOfRange)
                    {
                        wrong = true;
                        break;
                    }
                    interForShape = interForShape + '*';
                    if (integer < 0)
                    {
                        //interForShape = interForShape + '(' + strInteger + ')';
                        interForShape = interForShape + '(';
                        interForShape = interForShape + strInteger;
                        interForShape = interForShape + ')';
                    }
                    else
                    {
                        interForShape = interForShape + strInteger;
                    }
                }
                else
                {
                    wrong = true;
                }
                break;
            case 6:
                if (HasMultAndDivi)
                {
                    if ((*thisEquation).value<1E-7&&(*thisEquation).value>-(1E-7))          //若除数为0
                    {
                        wrong = true;
                        break;
                    }
                    if (HasRemainder)
                    {
                        value = (double)integer / (*thisEquation).value;
                        if (value > MaxOfRange || value < MinOfRange)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = '/' + interForShape;
                        if (integer < 0)
                        {
                            //interForShape = '(' + strInteger + ')' + interForShape;
                            interForShape = ')' + interForShape;
                            interForShape = strInteger + interForShape;
                            interForShape = '(' + interForShape;
                        }
                        else
                        {
                            interForShape = strInteger + interForShape;
                        }
                    }
                    else
                    {
                        if ((*thisEquation).value - int((*thisEquation).value) > 1E-7 || (*thisEquation).value - int((*thisEquation).value) < -(1E-7))
                        {
                            wrong = true;
                            break;
                        }
                        if (integer%int((*thisEquation).value) > 1E-7 || integer%int((*thisEquation).value) < -(1E-7))
                        {
                            wrong = true;
                            break;
                        }
                        else
                        {////
                            value = (double)integer / (*thisEquation).value;
                            if (value > MaxOfRange || value < MinOfRange)
                            {
                                wrong = true;
                                break;
                            }
                            interForShape = '/' + interForShape;
                            if (integer < 0)
                            {
                                //interForShape = '(' + strInteger + ')' + interForShape;
                                interForShape = ')' + interForShape;
                                interForShape = strInteger + interForShape;
                                interForShape = '(' + interForShape;
                            }
                            else
                            {
                                interForShape = strInteger + interForShape;
                            }
                        }
                    }
                }
                else
                {
                    wrong = true;
                }
                break;
            case 7:
                if (HasMultAndDivi)
                {
                    if (0 == integer)          //若除数为0
                    {
                        wrong = true;
                        break;
                    }
                    if (HasRemainder)
                    {
                        value = (*thisEquation).value / (double)integer;
                        if (value > MaxOfRange || value < MinOfRange)
                        {
                            wrong = true;
                            break;
                        }
                        interForShape = interForShape + '/';
                        if (integer < 0)
                        {
                            //interForShape = interForShape + '(' + strInteger + ')';
                            interForShape = interForShape + '(';
                            interForShape = interForShape + strInteger;
                            interForShape = interForShape + ')';
                        }
                        else
                        {
                            interForShape = interForShape + strInteger;
                        }
                    }
                    else
                    {
                        if ((*thisEquation).value - int((*thisEquation).value) > 1E-7 || (*thisEquation).value - int((*thisEquation).value) < -(1E-7))
                        {
                            wrong = true;
                            break;
                        }
                        if ((int((*thisEquation).value)) % integer > 1E-7 || (int((*thisEquation).value)) % integer < -(1E-7))
                        {
                            wrong = true;
                            break;
                        }
                        else
                        {////
                            value = (*thisEquation).value / (double)integer;
                            if (value > MaxOfRange || value < MinOfRange)
                            {
                                wrong = true;
                                break;
                            }
                            interForShape = interForShape + '/';
                            if (integer < 0)
                            {
                                //interForShape = interForShape + '(' + strInteger + ')';
                                interForShape = interForShape + '(';
                                interForShape = interForShape + strInteger;
                                interForShape = interForShape + ')';
                            }
                            else
                            {
                                interForShape = interForShape + strInteger;
                            }

                        }
                    }
                }
                else
                {
                    wrong = true;
                }
                break;
            }
        }
    } while (wrong);
    (*thisEquation).shape = interForShape;
    (*thisEquation).value = value;
    (*thisEquation).num += 1;
    if (rand() % 2 > 0 && (*thisEquation).num < 10)
    {
        (*thisEquation).shape = '(' + (*thisEquation).shape + ')';
        MakeBrackets(thisEquation);
    }
}

void Print()
{
    for (int i = 0; i < NUM_equation; i++)
    {
        if (Equation[i].isFraction)
        {
            string line1 = "";
            string line2 = "";
            string line3 = "";
            bool Fin_Negative = false;
            bool Fin_Numerator = false;
            bool Fin_Denominator = false;
            int NumNumerator = 0;
            int NumDenominator = 0;
            for (int j = 0;j<Equation[i].shape.length(); j++)
            {
                if ((Equation[i].shape[j]<48 || Equation[i].shape[j]>57) && Equation[i].shape[j] != 'd'&& Equation[i].shape[j] != '-')
                {
                    Fin_Denominator = true;
                    Fin_Numerator = false;
                    line1 = line1 + "  ";
                    line2 = line2 + Equation[i].shape[j] + ' ';
                    line3 = line3 + "  ";
                }
                else if (Equation[i].shape[j] == '-')
                {
                    if (j != 0 && (Equation[i].shape[j - 1] == '-' || Equation[i].shape[j - 1] == '+' || Equation[i].shape[j - 1] == '*' || Equation[i].shape[j - 1] == '/'))
                    {
                        line1 = line1 + '-';
                        line2 = line2 + '-';
                        line3 = line3 + ' ';
                    }
                    else
                    {

                        Fin_Denominator = true;
                        Fin_Numerator = false;

                        line1 = line1 + "  ";
                        line2 = line2 + "- ";
line3 = line3 + "  ";
                    }
                }
                else if (Equation[i].shape[j] == 'd')
                {
                    Fin_Numerator = true;
                    Fin_Denominator = false;
                    for (int k = 1;; k++)
                    {
                        //if ((Equation[i].shape[j + k]==NULL)||(Equation[i].shape[j + k] < 48 || Equation[i].shape[j + k] > 57))
                        if ((j + k) > Equation[i].shape.length() || (Equation[i].shape[j + k] < 48 || Equation[i].shape[j + k] > 57))
                        {
                            NumDenominator = k - 1;
                            break;
                        }
                    }
                    for (int h = 1;; h++)
                    {
                        if ((j - h < 0) || (Equation[i].shape[j - h] < 48 || Equation[i].shape[j - h] > 57))
                        {
                            NumNumerator = h - 1;
                            break;
                        }
                    }
                    if (NumNumerator > NumDenominator)
                    {
                        for (int n = 0; n < NumNumerator - NumDenominator; n++)
                        {
                            line3 = line3 + ' ';
                        }
                        for (int n = 0; n < NumNumerator; n++)
                        {
                            line2 = line2 + '-';
                        }
                    }
                    if (NumDenominator > NumNumerator)
                    {
                        for (int n = 0; n < NumDenominator - NumNumerator; n++)
                        {
                            line1 = line1 + ' ';
                        }
                        for (int n = 0; n < NumDenominator; n++)
                        {
                            line2 = line2 + '-';
                        }
                    }
                    else
                    {
                        for (int n = 0; n < NumDenominator; n++)
                        {
                            line2 = line2 + '-';
                        }
                    }
                }
                else
                {
                    if (!Fin_Numerator)
                    {
                        line1 = line1 + Equation[i].shape[j];
                    }
                    else if (!Fin_Denominator)
                    {
                        line3 = line3 + Equation[i].shape[j];
                    }
                }
            }
            if (PrintToFile)
            {
                ofstream ofile;
                ofile.open("print.txt");
                ofile << line1 << endl << line2 << endl << line3 << endl << endl;
                ofile.close();
            }
            else
            {
                cout << line1 << endl << line2 << endl << line3 << endl << endl;
            }

        }
        else
        {
            if (PrintToFile)
            {
                ofstream ofile;
                ofile.open("print.txt");
                ofile << Equation[i].shape << endl << endl;
                ofile.close();
            }
            else
            {
                cout << Equation[i].shape << endl << endl;
            }
        }
        string buffer;
        bool Result_Right = true;
        int NumofDiv=0;
        int Numofdot = 0;
        int SpaceofDiv;
        cout << "结果:";
        cin >> buffer;
        if (!buffer.empty())
        {
            for (int m = 0; m < buffer.length(); m++)
            {
                if ((buffer[m] < 48 || buffer[m]>57) && buffer[m] != '/'&& buffer[m] != '.')
                {
                    Result_Right = false;
                    break;
                }
                if (buffer[m] == '/')
                {
                    NumofDiv += 1;
                    if (NumofDiv > 1)
                    {
                        Result_Right = false;
                        break;
                    }
                    SpaceofDiv = m;
                }
                if (buffer[m] == '.')
                {
                    Numofdot += 1;
                    if (Numofdot > 1)
                    {
                        Result_Right = false;
                        break;
                    }
                }
            }
            if (Result_Right)
            {
                double result;
                if (NumofDiv == 1)
                {
                    string strfor=buffer.substr(0,SpaceofDiv);
                    string strlat = buffer.substr(SpaceofDiv+1,buffer.length()-SpaceofDiv-1);
                    double former = atof(strfor.c_str());
                    double latter = atof(strlat.c_str());
                    if ((latter - 0) < 1E-7 && (latter - 0) > (-1E-7))
                    {
                        Result_Right = false;
                        break;
                    }
                    result = former / latter;
                }
                else
                {
                    result = atof(buffer.c_str());
                }
                if ((result - Equation[i].value) < 1E-2 && (result - Equation[i].value) > (-1E-2))
                {
                    Result_Right = true;
                }
                else
                {
                    Result_Right = false;
                }
            }
            if (Result_Right)
            {
                cout << "正确!" << endl;
            }
            else
            {
                cout << "错误！" << endl;
            }
        }
        else
        {
            cout << "错误！" << endl;
        }
    }
}

int main()
{
    system("mode con: cols=120 lines=40");
    srand(time(0));
    getRequirement();
    CreateEquation();
    Print();
    return 0;
}

运行截图：

 

此次两人合作编码合作者是杨安琪，链接：

http://www.cnblogs.com/ning-JML/p/5296763.html 

项目计划总结：

日期&&任务	听课	编写程序	阅读相关书籍	网上查资料	日总计
周一	2	3			5
周二			1		1
周三		4		1	5
周四	2	1			3
周五		4		2	6
周六		2		1	3
周日			2		2
周总计	4	14	3	4	25

时间纪录日志：

日期	开始时间	结束时间	中断时间	净时间	活动	备注
3/14	14:00	15:00	10	100	听课	软件工程
	16:00	20:00	60	180	重写上周的代码	二柱子02
3/15	20:00	21:00	0	60	看书	大道至简
3/16	15:00	21:00	120	240	重写上周代码、 二柱子03代构思
	15:00	21:00	300	60	上网查资料
3/17	14:00	15:00	10	100	听课	软件工程
	20:00	22:00	60	60	写代码、吃东西
3/18	15:00	22:00	180	240	写代码、写作业、看书
	15:00	22:00	300	120	查资料
3/19	19:00	22:00	0	180	写博客、改程序、测试

缺陷记录日志：

日期	编号	类型	引入阶段	排除阶段	修复时间	修复缺陷
3/16	1		字符溢出	不能一起加，要分开加	120min
3/18	3		重复定义	修改定义	10min