#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
int leap(int a)
{
if (a % 4 == 0 && a % 100 != 0 || a % 400 == 0)
{
return 1;
}
else
return 0;
}
int number(int year, int m, int d)
{
int sum = 0, i, a[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int b[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if (leap(year) == 1)
{
for (i = 0; i < m - 1; i++)
sum += b[i];
}
else
{
for (i = 0; i < m - 1; i++)
sum += a[i];
}
sum += d;
return sum;
}
int main()//计算某一天是该年的第几天
{
int year, month, day, n;
printf("请输入年月日\n");
scanf("%d%d%d", &year, &month, &day);
n = number(year, month, day);
printf("第%d天\n", n);
system("pause");
return 0;
}
