Leap year program in C

You can create a program to determine whether a given year is a leap year or not. Leap years have an extra day, February 29th, and follow a specific rule:

• A year is a leap year if it is divisible by 4.
• However, if a year is divisible by 100, it is not a leap year unless it is also divisible by 400.

Here’s a C program to check if a year is a leap year or not:

#include <stdio.h>

int main() {
    int year;

    printf("Enter a year: ");
    scanf("%d", &year);

    if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
        printf("%d is a leap year.\n", year);
    } else {
        printf("%d is not a leap year.\n", year);
    }

    return 0;
}

In this program:

• We prompt the user to enter a year.
• We use the condition (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0) to check if the year is divisible by 4 but not divisible by 100 (or divisible by 400). If this condition is true, the year is a leap year.
• If the condition is met, we print that the year is a leap year; otherwise, we print that it is not a leap year.

Compile and run the program, and it will determine whether the entered year is a leap year or not based on the leap year rule.