输入1到7的数字，输出对应的星期名的缩写的编程

代码如下：

#include <iostream>
using namespace std;

int main() {
    int num;
    cout << "请输入1到7的数字：" << endl;
    cin >> num;
    switch(num) {
        case 1:
            cout << "Mon" << endl;
            break;
        case 2:
            cout << "Tue" << endl;
            break;
        case 3:
            cout << "Wed" << endl;
            break;
        case 4:
            cout << "Thu" << endl;
            break;
        case 5:
            cout << "Fri" << endl;
            break;
        case 6:
            cout << "Sat" << endl;
            break;
        case 7:
            cout << "Sun" << endl;
            break;
        default:
            cout << "输入错误！" << endl;
            break;
    }
    return 0;
}

希望能够帮到您！