输入年月日，计算该年第几天

#include<stdio.h>

struct date{
	int day;
	int month;
	int year;
};

struct date *Time(struct date *Time){
	scanf("%d %d %d", &Time->day, &Time->month, &Time->year);
	return Time;
};

void print(int n);
bool Isleap(int d);
int caltime(struct date *dd);

int main(){
	struct date ti = { 0, 0, 0 };
	printf("input the date(day month year)\n");
	Time(&ti);
	print(caltime(&ti));
}

bool Isleap(int d){
	int answer;
	if ((d % 4 == 0 && d % 100 != 0) || d % 400 == 0){
		answer = 1;
	}
	else{
		answer = 0;
	}
	return answer;
}

int caltime(struct date *dd){
	const int mnth[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	int yer = dd->year;
	int cnt = dd->day;
	int i;
	int midx = dd->month;
	for (i = 0; i < midx - 1; i++){
		cnt += mnth[i];
	}
	if (Isleap(yer)){
		cnt++;
	}
	return cnt;
}

void print(int n){
	printf("The time is %d\n", n);
}