10.年月日 (5分)

 输入某年某月某日，判断这一天是这一年的第几天？

依次输入年月日，中间用空格隔开，如
2012 6 10

2012-6-10是这年的第162天

2012 6 10

162

#include <stdio.h>
int runnian(int y){if((y%4==0 && y%100!=0) || (y%400==0))return 1;else return 0;
}
int main(){int year, day, m, i, sum = 0, z;int month[12] = {31,28,31,30,31,30,31,31,30,31,30,31};scanf("%d%d%d", &year, &m, &day);if(runnian(year))month[1] = 29;for(i = 0;i < m-1;i++)sum = sum + month[i];z = sum + day;printf("%d", z);return 0;
}