每日一题——第八十七题

题目：给出年月日，计算该日期是这一年的第几天

#include<stdio.h>
#include<stdbool.h>bool isLeapYear(int year) {return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
}int dayOfYear(int year, int month, int day) {//非闰年每月的天数int daysInMonth[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};if (isLeapYear(year)) {daysInMonth[1] = 29;}int totalDays = 0;for (int i = 0; i < month - 1; i++){totalDays += daysInMonth[i];}totalDays += day;return totalDays;}int main() {int year, month, day;printf("请输入年月日（格式为：年  月  日）：");scanf_s("%d %d %d", &year, &month, &day);printf("该日期是这一年的第 %d 天\n", dayOfYear(year, month, day));return 0;
}