Coursera课程笔记----计算导论与C语言基础----Week 12

期末编程测试（Week 12）

Quiz1 判断闰年

#include <iostream>
using namespace std;
int main()
{
    int year;
    cin >> year;

    if(year % 100 == 0 && year % 400 != 0 || year % 4 != 0 || year % 3200 == 0)
        cout<<'N'<<endl;
    else cout<<'Y'<<endl;

    return 0;
}

Quiz2 能被3，5，7整除的数

#include <iostream>
using namespace std;
int main()
{
    int n;

    while(cin >> n)
    {
        if (n % 3 == 0)
            cout << '3' << ' ';
        if (n % 5 == 0)
            cout << '5' << ' ';
        if (n % 7 == 0)
            cout << '7' << ' ';
        if (n % 3 != 0 && n % 5 != 0 && n % 7 != 0)
            cout << 'n' << ' ';
        cout<<'
';
    }

    return 0;
}

Quiz3 最远距离

#include <iostream>
#include <math.h>
#include <iomanip>
using namespace std;
int main()
{
    int n;
    cin >> n;

    const int N = n;
    double one[N],two[N];
    double maxDistance = 0.0;
    for (int i = 0; i < N; i++) {
        cin>>one[i]>>two[i];
    }

    for (int i = 0; i < N; i++) {
        for (int j = i + 1; j < N; j++) {
            double distance = sqrt((one[i]-one[j])*(one[i]-one[j])+(two[i]-two[j])*(two[i]-two[j]));
            if(distance > maxDistance)
                maxDistance = distance;
        }
    }

    cout << fixed << setprecision(4) <<maxDistance<<endl;
return 0;
    }

Quiz4 简单计算器

#include <iostream>
using namespace std;
int main()
{
    int a,b;
    char c;
    cin>>a>>b>>c;
        if(c == '/' && b == 0)
        {
            cout<<"Divided by zero!"<<endl;
        }

        if(c!='/' && c!='+' && c!='-' && c!='*')
        {
            cout<<"Invalid operator!"<<endl;
        }

        if(c == '+')
        {
            cout<<a+b<<endl;
        }
        if(c == '-')
        {
            cout<<a-b<<endl;
        }
        if(c == '*')
        {
            cout<<a*b<<endl;
        }
        if(c == '/')
        {
            cout<<a/b<<endl;
        }
    return 0;
}

Quiz5 字符串插入

#include<cstdio>
#include<string>
#include<iostream>
using namespace std;

int main()
{
    string str,substr;
    while(cin>>str)
    {

        cin>>substr;

        char temp1,temp2,temp;
        int len1,len2,max;
        len1=str.length();
        len2=substr.length();

        max=0;
        for(int i=1;i<len1;i++)
        {
            temp1 = str[max];
            temp2 = str[i];
            if(temp1<temp2)
                max=i;

        }
        temp=max+1;
        str.insert(temp,substr);
        cout<<str<<endl;
    }
    return 0;
}