View Code of Problem 81

#include <iostream>
#define isleap(x) ((x%4==0&&x%100!=0)||x%400==0)?1:0
using namespace std;

int dayOfMonth[13][2] = {
    0,0,
    31,31,
    28,29,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31,
    31,31,
    30,30,
    31,31,
    30,30,
    31,31
};
  
int main(){
  int y,m,d,sum=0;
  scanf("%d%d%d",&y,&m,&d);
  for(int j=1;j<m;j++){
    sum+=dayOfMonth[j][isleap(y)];
  }
  printf("%d",sum+d);
  return 0;
}