计算天数

/*
    xuejineng2016@163.com
    2020年5月6日
*/
#include<stdio.h>
int main(void)
{
    int year, month, day;
    int isleap;
    int i;
    //用数组定义每个月的天数
    int tab[2][13] = { {0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31} };

    scanf_s("%d/%d/%d", &year, &month, &day);
    //闰年问题
    isleap = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
    for (i = 1; i < month; i++)
    {
        //计算从1月开始，月份的总天数
        day = day + tab[isleap][i];
    }
    printf("%d
", day);

    return 0;
}