switch...case

#include <iostream>
#include <Windows.h>

using namespace std;

int main()
{
    int num = 0;

    cout << "请输入1-7的一个整数：";
    cin >> num;

    switch (num)
    {
    case 1:
        cout << "星期一：包子" << endl;
        break;
    case 2:
        cout << "星期二：大米" << endl;
        break;
    case 3:
        cout << "星期三：面条" << endl;
        break;
    case4:
        cout << "星期四：玉米" << endl;
        break;
    case 5:
        cout << "星期五：南瓜" << endl;
        break;
    case 6:
    case 7:
        cout << "周末，休息" << endl;
        break;
    default:
        cout << "输入有误" << endl;
        break;
    }

    system("pause");
    return 0;
}