Given Year Is Leap Year Or Not

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This C program checks whether a given year is a leap year or not. A leap year is a year that is evenly divisible by 4, except for years that are divisible by 100 but not by 400.

#include<stdio.h>
main()
{
  int year;
  printf("Enter the year you want to check\n");
  scanf("%d",&year);
  if(year%400==0)
  {
    printf("%d is leap year\n",year);
  }
  else if(year%100==0)
  {
    printf("%d is not a leap year\n",year);
  }
  else if(year%4==0)
  {
    printf("%d is a leap year\n",year);
  }
  else
  {
    printf("%d is not a leap year\n",year);
  }
 }

OUTPUT

Enter the year you want to check
1995
1995 is not a leap year

Explanation:

Here’s a step-by-step explanation of the code:

Header File:

The program includes the standard C library header <stdio.h>. This header is required for input and output operations.

Main Function:

The main function is the entry point of the program, where the execution begins.
Variable Declaration:
The program declares an integer variable ‘year’ to store the user’s input (the year to be checked).

User Input:

The program prompts the user to enter a year with the printf function and reads the input using scanf. The entered year is stored in the ‘year’ variable.

Leap Year Checking:

The program uses a series of if-else if-else statements to check whether the entered year is a leap year or not.

The conditions for leap years are:

If the year is divisible by 400 (year % 400 == 0), it’s a leap year.
If the year is divisible by 100 but not by 400 (year % 100 == 0), it’s not a leap year.
If the year is divisible by 4 (year % 4 == 0), it’s a leap year.
If none of the conditions is met, the year is not a leap year.

Output:

The program uses printf to display the result of the leap year check.
If the year is a leap year, it prints that the year is a leap year.
If the year is not a leap year, it prints that the year is not a leap year.

End of Program:

Once the result is printed, the program reaches the end of the main function, concluding the program’s execution.

This code takes a user-entered year as input and checks whether it’s a leap year based on the conditions mentioned earlier. It then displays the result to the user.

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