用c语言编写一个switch小程序，输入一个数字，输出对应的星期的一个英文单词

在C语言中，你可以创建一个简单的switch结构来实现这个功能。下面是一个示例程序，它会根据用户输入的整数（1-7代表一周的天数）输出相应的英文星期：

#include <stdio.h>

int main() {
    int day;
    
    printf("请输入一个数字(1-7)，表示星期几：");
    scanf("%d", &day);

    // 定义一周的英文星期
    const char *weekdays[] = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};

    // 使用switch语句判断并输出对应英文单词
    switch (day) {
        case 1:
            printf("The day is %s.\n", weekdays[0]);
            break;
        case 2:
            printf("The day is %s.\n", weekdays[1]);
            break;
        case 3:
            printf("The day is %s.\n", weekdays[2]);
            break;
        case 4:
            printf("The day is %s.\n", weekdays[3]);
            break;
        case 5:
            printf("The day is %s.\n", weekdays[4]);
            break;
        case 6:
            printf("The day is %s.\n", weekdays[5]);
            break;
        case 7:
            printf("The day is %s.\n", weekdays[6]);
            break;
        default:
            printf("Invalid input! Please enter a number between 1 and 7.\n");
            break;
    }

    return 0;
}