c++编写一个函数实现月份的输出

下面是一个简单的 C++ 函数，用于输出月份：

#include <iostream>
#include <string>

using namespace std;

void printMonth(int month) {
    string monthName;

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

    cout << monthName << endl;
}

int main() {
    printMonth(3);
    printMonth(13);
    printMonth(9);
    printMonth(0);

    return 0;
}

该函数接受一个整数表示月份，使用 switch 语句将其转换为相应的月份名称，并将其打印到控制台。如果传入的值无效，则输出 "Invalid month"。在主函数中，我们调用 printMonth 函数多次，以演示其功能。