Leap Year Program & Algorithm in C Programming Language

Leap Year Program in C

C programming is powerful to find out various things using some powerful codes. Users can make use of it to write a program to check leap year in C. Finding that whether a year is a leap or not can be a bit tricky, but here we are going to write a leap year program in C to help you get at ease.

Generally, we assume that if any year number that we take is evenly divisible by 4 is considered a leap year, you cannot rely on that. There are few conditions for a leap year.

Leap Year:

In case the year number is divisible by 4, or you can say 100 and 400, then we can assume that it is a leap year.

To write a program to check the leap year in c, If the year number is divisible by 4 but not divisible by 100, then we can say that it is a leap year.

Not a Leap Year:

If that year’s number is not divisible by the value of 4, it is not considered a leap year.

If the same year number is divisible by 4 and 100, but it may not be divisible by 400, then we can say that it is not a leap year.

We can write a program to find leap year in C to help you understand better about Leap year and its C program. Here is the example.

Program to find leap year in C

Following is the program for leap year in c.

#include <stdio.h>

int main() {

   int year;

   printf("Enter year: ");

   scanf("%d", &year);




   // leap year if divisible by 400

   if (year % 400 == 0) {

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

   }

   // not a leap year if it is divisible by 100

   // but not divisible by 400

   else if (year % 100 == 0) {

      printf("%d is not a leap year.", year);

   }

   // leap year if not divisible by 100

   // but divisible by 4

   else if (year % 4 == 0) {

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

   }

   // all other years are not leap years

   else {

      printf("%d is not a leap year.", year);

   }




   return 0;

}

Output 1

Enter year: 1700

1700 is not a leap year.

Output 2

Enter a year: 2016

2016 is a leap year.

Leap Year Algorithm

Algorithm of the program for leap year in C

Start

  • Take int variable year
  • Assign the value to that variable
  • Check if the taken year is divisible by 4 but not 100, then DISPLAY “leap year.”
  • Check if that year number is divisible by 400, then DISPLAY “leap year.”
  • Else, DISPLAY “not leap year.”

Stop

Also Read: Merge Sort Algorithm in C

Conclusion

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FAQ’s

How do you write a program for a leap year?

Leap Year Program in C can be written as.

  • It is divisible by 100. In case it is divisible by 100, it should also be divisible by 400.
  • Except for this condition, all of the other years that are divisible by 4 are leap years.

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