题解 | #计算日期到天数转换#

#include <stdio.h>

//判断平年闰年
//相加每月的天数
//最后相加具体日期



int main()
{
	int year = 0, month = 0, day = 0;
	scanf("%d %d %d", &year, &month, &day);
	int month_[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
	int sum = 0;
	int i = 0;
	for (i = 0; i < month - 1; i++)
	{
		sum += month_[i];
	}
	sum += day;
     if (((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))&&month>2)
	{
	 	sum++;
	}

	printf("%d", sum);
}