#include <stdio.h>

void MonthName(int month)
{
    switch (month)
    {
        case 1:printf("January\n");break;
        case 2:printf("February\n");break;
        default:printf("Illegal month\n");break;
        }
        return;
        }

加个主函数？？？？
int main(void){
    MonthName(1);
    return 0;
}

汗……

晕^^^^^^^^^^^^^^^^

很不懂意思

#include <stdio.h>

void MonthName(int month)
{
    switch (month)
    {
        case 1:
            printf("January\n");
            break;
        case 2:
            printf("February\n");
            break;
        /* add other month */
        default:
            printf("Illegal month\n");
            break;
    }
}

int main()
{
    printf("请输入月份");
    int month = 0;
    scanf("%d", &month);
    MonthName(month);
    return 0;
}

无语中。。。。。。