switch case

没有别的意思，就是数一下switch case 语句
switch 里面只能是整数，不能是浮点数等其他类型

#include<iostream>
using namespace std;
int main()
{
    int n;
    while(cin >> n)
    {
        switch(n)
        {
            case 200: cout << "OK" << endl;break;
            case 202: cout << "Accepted" << endl;break;
            case 400: cout << "Bad Request" << endl;break;
            case 403: cout << "Forbidden" << endl;break;
            case 404: cout << "Not Found" << endl;break;
            case 500: cout << "Internal Server Error" << endl;break;
            case 502: cout << "Bad Gateway" << endl;break;

        }
    }

    return 0;
}