题解 | 今年的第几天？

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
using namespace std;
//输入年、月、日，计算该天是本年的第几天
void SumDay(int year, int month, int day) {
	//用数组存储月对应的天数
	int dayOfMonth[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	if(year%4==0&&year%100!=0||year%400==0){//闰年判断
		dayOfMonth[2] = 29;
	}
	else {
		dayOfMonth[2] = 28;
	}
	//计算总天数
	int sum=0;
	for (int i = 0; i < month; i++) {
		sum = sum + dayOfMonth[i];
	}
	sum = sum + day;
	printf("%d\n", sum);
	}
int main() {
	int year, month, day;
	scanf("%d %d %d", &year, &month, &day);
	SumDay(year, month, day);
	return 0;
}