HDU 2005 - 第几天

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=2005

#include <math.h>#include <stdio.h>#define lev(n) (n % 4 == 0 && (n % 100 != 0 || n % 400 == 0))int main(void){    int y, m, d, i, s;    int month[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}    };    while (scanf("%d/%d/%d", &y, &m, &d) != EOF)    {        for (s = 0, i = 1 ; i < m ; i++)            s += month[lev(y)][i];        s += d;        printf("%d\n", s);    }    return 0;}