Leap year C program

 #include <stdio.h>

int main()

{

  int year;

 

  printf("Enter a year to check if it's a leap year\n");

  scanf("%d", &year);

 

  if (year%400 == 0) // Exactly divisible by 400, e.g., 1600, 2000

    printf("%d is a leap year.\n", year);

  else if (year%100 == 0) // Exactly divisible by 100 and not by 400, e.g., 1900, 2100

    printf("%d isn't a leap year.\n", year);

  else if (year%4 == 0) // Exactly divisible by 4 and neither by 100 nor 400, e.g., 2016, 2020

    printf("%d is a leap year.\n", year);

  else // Not divisible by 4 or 100 or 400, e.g., 2017, 2018, 2019

    printf("%d isn't a leap year.\n", year);  

   

  return 0;

}
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