switch写法：

#include <bits/stdc++.h>
using namespace std;
int main() {
    int num;
    cin >> num;  // 输入一个整数 
    switch (num) {
        case 1:
            cout << "寿仙菇" << endl;
            break;
        case 2:
            cout << "酒糟芋" << endl;
            break;
        case 3:
            cout << "下山笋" << endl;
            break;
        case 4:
            cout << "太师豆腐" << endl;
            break;
        case 5:
            cout << "孝子鱼" << endl;
            break;
        case 6:
            cout << "猪全福" << endl;
            break;
        default:
            cout << "无此编号的菜" << endl;
            break;
    }
    return 0;
}