给出年、月、日，计算该日是该年的第几天。

【描述】

给出年、月、日，计算该日是该年的第几天。

【C语言】

#include<stdio.h>

int sum_day(int month, int day) {

int day_tab[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int i;
for (i = 1; i < month; i++)
day = day + day_tab[i];
return (day);
}

int leap(int year) {

int leap;
leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
return (leap);
}

int main() {
int year, month, day;
int days;
scanf("%d %d %d", &year, &month, &day);
printf("%d %d %d\n", year, month, day);
days = sum_day(month, day);
if (leap(year) && month > 2)
days = days + 1;
printf("%d", days);
return 0;
}