计算某天是所在年的第几天

#include <stdio.h>
#include <stdbool.h>
int main()
{
    int y,m,d;
    while(scanf("%d%d%d",&y,&m,&d)){
        printf("%d
",dayOfYear(y,m,d));
    }
    return 0;
}
// 判断是否是闰年 
bool isLeapYear(int inputYear){
    if((inputYear%4==0&&inputYear%100!=0)||inputYear%400==0){
        return true;    
    }
    else {return false;}
}    
int dayOfYear(int year,int month,int day){
    int day_of_year;
    if(isLeapYear(year)){
        day_of_year=((275 * month)/9)-((month + 9)/12)+day-30;
    }else{
        day_of_year=((275 * month)/9)-(((month + 9)/12)<<1)+day-30;
    }
    return day_of_year;
} 

说明：

21行的275暂未解决