题目

编写一个程序，提示用户输入天数，然后将其转换成周数和天数。通过while循环让用户重复输入天数，当用户输入一个非正值时（如0或-20），循环结束。

编程

#include <stdio.h>

int main(void)
{
    int days, week, day;

    printf("please input days:");
    scanf("%d", &days); //输入天数
    while (days > 0)
    {
        week = days / 7;
        day = days - week * 7;
        printf("%d days is %d week %d day\n", days, week, day);
        printf("\nplease input days:");
        scanf("%d", &days); //打断while循环，从新输入天数
    }

    return 0;

}

效果