用c++编写一个子函数实现月份输出

以下是一个简单的C++程序，用于根据用户输入的数字输出对应的月份：

#include <iostream>
using namespace std;

void printMonth(int month) {
    switch (month) {
        case 1:
            cout << "January" << endl;
            break;
        case 2:
            cout << "February" << endl;
            break;
        case 3:
            cout << "March" << endl;
            break;
        case 4:
            cout << "April" << endl;
            break;
        case 5:
            cout << "May" << endl;
            break;
        case 6:
            cout << "June" << endl;
            break;
        case 7:
            cout << "July" << endl;
            break;
        case 8:
            cout << "August" << endl;
            break;
        case 9:
            cout << "September" << endl;
            break;
        case 10:
            cout << "October" << endl;
            break;
        case 11:
            cout << "November" << endl;
            break;
        case 12:
            cout << "December" << endl;
            break;
        default:
            cout << "Invalid input" << endl;
            break;
    }
}

int main() {
    int month;
    cout << "Enter a number between 1 and 12: ";
    cin >> month;
    printMonth(month);
    return 0;
}

在这个程序中，`printMonth()` 函数接受一个整数参数 `month`，并使用 `switch` 语句将其转换为对应的字符串。主函数从用户获取输入，并调用 `printMonth()` 函数以输出月份。