一：设计思路（主要为本次作业设计思路）
1.主函数满足用户需求（整数还是分数运算还是混合运算/是否有乘除/多少个）
2.混合运算（两个数组，一个数组放随机生成的数，另一数组放随机生成的符号，利用栈来运算结果（栈一直有BUG，还没有实现））
二：源程序代码
//最新更新2016.3.26 构建之法中的四则运算
//20143066毛雯雯
include
include
define N 10000
using namespace std;
//默认整数的生成
int any_Number()
{
int n;
n = rand()%100;
return n;
}
//指定整数的生成
int named_Number(int x,int y)
{
int n;
n = rand()%(y-x+1)+x;
return n;
}
//指定符号的生成
char named_symbol()
{
char c;
int i;
i = rand()%2;
switch(i)
{
case(0):
{
c='+';
break;
}
case(1):
{
c='-';
break;
}
}
return c;
}
//默认符号的生成
char any_symbol()//符号生成
{
char c;
int i;
i = rand()%4;
switch(i)
{
case(0):
{
c='+';
break;
}
case(1):
{
c='-';
break;
}
case(2):
{
c='*';
break;
}
case(3):
{
c='/';
break;
}
}
return c;
}
//指定整数四则算术的生成OK
void int_named_Build(int x,int y)
{
int number_of_named_int;
cout<<"请输入生成指定范围内的纯整数四则运算的个数"<<endl;
cin>>number_of_named_int;
int a[N],b[N];
char c[N];
int i,j;
double p[N];//答案
//int q[N];
for(i=0;i<number_of_named_int;i++)//生成
{
a[i] = named_Number(x,y);
c[i] = any_symbol();
b[i] = named_Number(x,y);
if((c[i]=='/')&&(b[i]==0))
{
b[i] = named_Number(x,y);
}
if(c[i]=='/')
{
if(a[i]<b[i])
{
int m;
m = a[i];
a[i] = b[i];
b[i] = a[i];
}
while((a[i]%b[i])!=0)
{
a[i] = named_Number(x,y);
b[i] = named_Number(x,y);
if(a[i]<b[i])
{
int m;
m = a[i];
a[i] = b[i];
b[i] = a[i];
}
}
}
}
for(i=0;i<number_of_named_int-1;i++)//遍历
{
for(j=i;j<number_of_named_int;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j]))
{
a[i] = named_Number(x,y);
c[i] = any_symbol();
b[i] = named_Number(x,y);
}
}
}
for(i=0;i<number_of_named_int;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
p[i] = a[i]+b[i];
break;
}
case('-'):
{
p[i] = a[i]-b[i];
break;
}
case('*'):
{
p[i] = a[i]*b[i];
break;
}
case('/'):
{
p[i] = a[i]/b[i];
break;
}
}
}
int count=0;
for(int i=0;i<number_of_named_int;i++)
{
cout<<a[i]<<c[i]<<b[i]<<"= 请输入答案！"<<endl;
int answer[N];
cin >> answer[i];
if(answer[i]!=p[i])
{
cout <<"答案错误！ 正确答案应为： "<< p[i] <<endl;
}
else
{
cout << "答案正确！" << endl;
count++;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_named_int-count)<<"个"<<endl;
}
//指定整数仅加减算术的生成//除法有细节错误0.1
void int_named_symbol_Build(int x,int y)
{
int number_of_named_int;
cout<<"请输入生成指定范围内的纯整数加减运算的个数"<<endl;
cin>>number_of_named_int;
int a[N],b[N];
char c[N];
double p[N];
int i,j;
for(i=0;i<number_of_named_int;i++)//生成
{
a[i] = named_Number(x,y);
c[i] = named_symbol();
b[i] = named_Number(x,y);
}
for(i=0;i<number_of_named_int-1;i++)//遍历
{
for(j=i;j<number_of_named_int;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j]))
{
a[i] = named_Number(x,y);
c[i] = named_symbol();
b[i] = named_Number(x,y);
}
}
}
for(i=0;i<number_of_named_int;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
p[i] = a[i]+b[i];
break;
}
case('-'):
{
p[i] = a[i]-b[i];
break;
}
}
}
int count=0;
for(int i=0;i<number_of_named_int;i++)
{
cout<<a[i]<<c[i]<<b[i]<<"= 请输入答案！"<<endl;
int answer[N];
cin >> answer[i];
if(answer[i]!=p[i])
{
cout <<"答案错误！ 正确答案应为： "<< p[i] <<endl;
}
else
{
cout << "答案正确！" << endl;
count++;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_named_int-count)<<"个"<<endl;
}
//默认整数四则算术的生成//除法有细节错误0.1
void int_Build()
{
int number_of_pure_int;
cout<<"请输入生成纯整数四则运算的个数"<<endl;
cin>>number_of_pure_int;
int a[N],b[N];
char c[N];
int i,j;
double p[N];
for(i=0;i<number_of_pure_int;i++)//生成
{
a[i] = any_Number();
c[i] = any_symbol();
b[i] = any_Number();
if((c[i]=='/')&&(b[i]==0))
{
b[i] = any_Number();
}
if(c[i]=='/')
{
if(a[i]<b[i])
{
int m;
m = a[i];
a[i] = b[i];
b[i] = a[i];
}
while((a[i]%b[i])!=0)
{
a[i] = any_Number();
b[i] = any_Number();
if(a[i]<b[i])
{
int m;
m = a[i];
a[i] = b[i];
b[i] = a[i];
}
}
}
}
for(i=0;i<number_of_pure_int-1;i++)//遍历
{
for(j=i;j<number_of_pure_int;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j]))
{
a[i] = any_Number();
c[i] = any_symbol();
b[i] = any_Number();
}
}
}
for(i=0;i<number_of_pure_int;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
p[i] = a[i]+b[i];
break;
}
case('-'):
{
p[i] = a[i]-b[i];
break;
}
case('*'):
{
p[i] = a[i]*b[i];
break;
}
case('/'):
{
p[i] = a[i]/b[i];
break;
}
}
}
int count=0;
for(int i=0;i<number_of_pure_int;i++)
{
cout<<a[i]<<c[i]<<b[i]<<"= 请输入答案！"<<endl;
int answer[N];
cin >> answer[i];
if(answer[i]!=p[i])
{
cout <<"答案错误！ 正确答案应为： "<< p[i] <<endl;
}
else
{
cout << "答案正确！" << endl;
count++;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_pure_int-count)<<"个"<<endl;
}
//默认整数仅加减的生成OK
void int_symbol_Build()
{
int number_of_pure_int;
cout<<"请输入生成纯整数四则运算的个数"<<endl;
cin>>number_of_pure_int;
int a[N],b[N];
char c[N];
int i,j;
double p[N];
for(i=0;i<number_of_pure_int;i++)//生成
{
a[i] = any_Number();
c[i] = named_symbol();
b[i] = any_Number();
}
for(i=0;i<number_of_pure_int-1;i++)//遍历
{
for(j=i;j<number_of_pure_int;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j]))
{
a[i] = any_Number();
c[i] = named_symbol();
b[i] = any_Number();
}
}
}
for(i=0;i<number_of_pure_int;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
p[i] = a[i]+b[i];
break;
}
case('-'):
{
p[i] = a[i]-b[i];
break;
}
}
}
int count=0;
for(int i=0;i<number_of_pure_int;i++)
{
cout<<a[i]<<c[i]<<b[i]<<"= 请输入答案！"<<endl;
int answer[N];
cin >> answer[i];
if(answer[i]!=p[i])
{
cout <<"答案错误！ 正确答案应为： "<< p[i] <<endl;
}
else
{
cout << "答案正确！" << endl;
count++;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_pure_int-count)<<"个"<<endl;
}
//指定符号的真分数算术的生成//遍历的结果的处理不太好
void true_Fraction_symbol_build()
{
int number_of_pure_true_fraction;
cout<<"请输入生成纯真分数四则运算的个数"<<endl;
cin>>number_of_pure_true_fraction;
int a[N],b[N],d[N],e[N];
char c[N];
int i,j;
int h[N],k[N];
int f[N],g[N];
for(i=0;i<number_of_pure_true_fraction;i++)//生成和保证真分数
{
a[i] = rand()%100+1;
b[i] = rand()%100+1;
if(a[i]>b[i])
{
int r;
r = a[i];
a[i] = b[i];
b[i] = r;
}
if(a[i]==b[i])
{
b[i]=b[i]+1;
}
for(j=2;j<=a[i];j++)
{
if(a[i]%j==0&&b[i]%j==0)
{
a[i] = a[i]/j;
b[i] = b[i]/j;
j = 1;
}
}
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
c[i] = named_symbol();
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
d[i] = rand()%100+1;
e[i] = rand()%100+1;
if(d[i]>e[i])
{
int r;
r = d[i];
d[i] = e[i];
e[i] = r;
}
if(d[i]==e[i])
{
e[i]=e[i]+1;
}
for(j=2;j<=d[i];j++)
{
if(d[i]%j==0&&e[i]%j==0)
{
d[i] = d[i]/j;
e[i] = e[i]/j;
j = 1;
}
}
}
for(i=0;i<number_of_pure_true_fraction-1;i++)//遍历
{
for(j=i;j<number_of_pure_true_fraction;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j])&&(e[i]==e[j])&&(d[i]==d[j]))
b[i]=a[i]+b[i];
}
}
for(i=0;i<number_of_pure_true_fraction;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
f[i] = a[i]*d[i]+b[i]*c[i];
g[i] = b[i]*d[i];
break;
}
case('-'):
{
f[i] = a[i]*d[i]-b[i]*c[i];
g[i] = b[i]*d[i];
break;
}
}
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
if(f[i]>g[i])
{
for(j=2;j<=g[i];j++)
{
if(f[i]%j==0&&g[i]%j==0)
{
f[i] = f[i]/j;
g[i] = g[i]/j;
j = 1;
}
}
}
else
{
for(j=2;j<=f[i];j++)
{
if(f[i]%j==0&&g[i]%j==0)
{
f[i] = f[i]/j;
g[i] = g[i]/j;
j = 1;
}
}
}
}
int count=0;
for(i=0;i<number_of_pure_true_fraction;i++)
{
cout<<'('<<a[i]<<'/'<<b[i]<<')'<<'/'<<'('<<d[i]<<'/'<<e[i]<<')'<<"= 请输入正确答案(分别输入分子和分母)！"<<endl;
cin>>h[i];
cin>>k[i];
if((h[i]==f[i])&&(k[i]==g[i]))
{
cout<<"答案正确！"<<endl;
count++;
}
else
{
cout << "答案错误！正确答案为： " <<f[i]<<'/'<<g[i]<<endl;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_pure_true_fraction-count)<<"个"<<endl;
}
//随机符号的真分数算术的生成//遍历的结果的处理不太好
void true_Fraction_build()
{
int number_of_pure_true_fraction;
cout<<"请输入生成纯真分数四则运算的个数"<<endl;
cin>>number_of_pure_true_fraction;
int a[N],b[N],d[N],e[N];
char c[N];
int i,j;
int f[N],g[N];
int h[N],k[N];
for(i=0;i<number_of_pure_true_fraction;i++)//生成和保证真分数
{
a[i] = rand()%100+1;
b[i] = rand()%100+1;
if(a[i]>b[i])
{
int r;
r = a[i];
a[i] = b[i];
b[i] = r;
}
if(a[i]==b[i])
{
b[i]=b[i]+1;
}
for(j=2;j<=a[i];j++)
{
if(a[i]%j==0&&b[i]%j==0)
{
a[i] = a[i]/j;
b[i] = b[i]/j;
j = 1;
}
}
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
c[i] = any_symbol();
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
d[i] = rand()%100+1;
e[i] = rand()%100+1;
if(d[i]>e[i])
{
int r;
r = d[i];
d[i] = e[i];
e[i] = r;
}
if(d[i]==e[i])
{
e[i]=e[i]+1;
}
for(j=2;j<=d[i];j++)
{
if(d[i]%j==0&&e[i]%j==0)
{
d[i] = d[i]/j;
e[i] = e[i]/j;
j = 1;
}
}
}
for(i=0;i<number_of_pure_true_fraction-1;i++)//遍历
{
for(j=i;j<number_of_pure_true_fraction;j++)
{
if((a[i]==a[j])&&(b[i]==b[j])&&(c[i]==c[j])&&(e[i]==e[j])&&(d[i]==d[j]))
b[i]=a[i]+b[i];
}
}
for(i=0;i<number_of_pure_true_fraction;i++)//生成答案
{
switch(c[i])
{
case('+'):
{
f[i] = a[i]*d[i]+b[i]*c[i];
g[i] = b[i]*d[i];
break;
}
case('-'):
{
f[i] = a[i]*d[i]-b[i]*c[i];
g[i] = b[i]*d[i];
break;
}
case('*'):
{
f[i] = a[i]*c[i];
g[i] = b[i]*d[i];
break;
}
case('/'):
{
f[i] = a[i]*d[i];
g[i] = b[i]*c[i];
break;
}
}
}
for(i=0;i<number_of_pure_true_fraction;i++)
{
if(f[i]>g[i])
{
for(j=2;j<=g[i];j++)
{
if(f[i]%j==0&&g[i]%j==0)
{
f[i] = f[i]/j;
g[i] = g[i]/j;
j = 1;
}
}
}
else
{
for(j=2;j<=f[i];j++)
{
if(f[i]%j==0&&g[i]%j==0)
{
f[i] = f[i]/j;
g[i] = g[i]/j;
j = 1;
}
}
}
}
int count=0;
for(i=0;i<number_of_pure_true_fraction;i++)
{
cout<<'('<<a[i]<<'/'<<b[i]<<')'<<'/'<<'('<<d[i]<<'/'<<e[i]<<')'<<"= 请输入正确答案(分别输入分子和分母)！"<<endl;
cin>>h[i];
cin>>k[i];
if((h[i]==f[i])&&(k[i]==g[i]))
{
cout<<"答案正确！"<<endl;
count++;
}
else
{
cout << "答案错误！正确答案为： " <<f[i]<<'/'<<g[i]<<endl;
}
}
cout << "做对了" <<count<<"个，做错"<<(number_of_pure_true_fraction-count)<<"个"<<endl;
}
//复杂运算//暂未实现结果比对
void complex()
{
int num_num;
int num_symbol;
int num[N];
char symbol[N];
int i,j,k;
int m;
cout<<"请输入生成的个数："<<endl;
cin>>m;
for(k=0;k<m;k++)
{
num_num = rand()%8+2;
num_symbol = num_num - 1;
for(i=0;i<num_num;i++)
{
num[i]=any_Number()+1;
}
for(j=0;j<num_symbol;j++)
{
symbol[j]=any_symbol();
}
for(i=0;i<num_num-1;i++)
{
cout << num[i];
cout << symbol[i];
}
cout <<num[num_num-1] <<"= "<<endl;
}
}
int main()
{
int choose_1;
cout<<"请选择: 1纯整数的运算"<<endl;
cout<<" 2真分数的运算"<<endl;
cout<<" 3混合运算"<<endl;
cin>>choose_1;
while(choose_1!=1&&choose_1!=2&&choose_1!=3)
{
cout<<"输入错误，请重新输入："<<endl;
cin>>choose_1;
}
if(choose_11)
{
int choose_2;
cout<<"请选择：1指定范围的整数运算"<<endl;
cout<<" 2默认范围的整数运算"<<endl;
cin>>choose_2;
while(choose_2!=1&&choose_2!=2)
{
cout<<"输入错误，请重新输入："<<endl;
cin>>choose_2;
}
if(choose_21)
{
int x;
int y;
cout<<"请输入指定整数的范围:"<<endl;
cin>>x;
cin>>y;
int choose_3;
cout<<"请选择:1仅加减法的整数运算"<<endl;
cout<<" 2四则整数运算"<<endl;
cin>>choose_3;
while(choose_3!=1&&choose_3!=2)
{
cout<<"输入错误，请重新输入："<<endl;
cin>>choose_3;
}
if(choose_3==1)
{
//指定整数&&仅加减法
int_named_symbol_Build(x,y);
}
else
{
//指定整数&&四则运算
int_named_Build(x,y);
}
}
else
{
int choose_3;
cout<<"请选择：1仅加减法的随机整数运算"<<endl;
cout<<" 2四则随机整数运算"<<endl;
cin>>choose_3;
while(choose_3!=1&&choose_3!=2)
{
cout<<"输入错误，请重新输入："<<endl;
cin>>choose_3;
}
if(choose_3==1)
{
//随机整数&&仅加减法
int_symbol_Build();
}
else
{
//随机整数&&四则运算
int_Build();
}
}
}
if(choose_1==2)
{
int choose_3;
cout<<"请选择：1仅加减法的真分数运算"<<endl;
cout<<" 2四则真分数运算"<<endl;
cin>>choose_3;
while(choose_3!=1&&choose_3!=2)
{
cout<<"输入错误，请重新输入："<<endl;
cin>>choose_3;
}
if(choose_3==1)
{
//真分数&&仅加减法
true_Fraction_symbol_build();
}
else
{
//真分数&&四则运算
true_Fraction_build();
}
}
if(choose_1==3)
{
//复杂运算
complex();
}
return 0;
}
三：截图
四：相关日志记录
五：结对工作照
六：总结
1.一下子就考虑的太多，思绪特别乱，总想着一步到位！
2.自己总给自己借口（还有WEB,数据库……也有作业），不能每天都花时间
3.程序中备注的地方都有小错或者未实现的地方
4.感觉自己代码很长，但是又无从下手去优化