Any year is entered through the keyboard. Write a function to determine whether the year is a leap year or not.
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C Program To Check Leap Year
Video Tutorial: C Program To Check Leap Year or Not using Function
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Source Code: C Program To Check Leap Year or Not using Function
#include<stdio.h> #include<stdbool.h> bool leap(int); // function prototype int main() { int year; printf("Enter a year to find leap year or not\n"); scanf("%d", &year); //function call leap(year); if( leap(year) ) { printf("%d is leap year\n", year); } else { printf("%d is not leap year\n", year); } return 0; } //function definition bool leap(int year) { if(year % 100 == 0) { if(year % 400 == 0) return true; else return false; } else { if(year % 4 == 0) return true; else return false; } }
Output 1
Enter a year to find leap year or not
2020
2020 is leap year
Output 2
Enter a year to find leap year or not
2021
2021 is not leap year
Logic To Find Leap Year or Not: Using Function
If user entered year is a century year(year ending with 00) and the year is perfectly divisible by 400, then it’s a leap year.
If the user entered year is not a century year and the year is perfectly divisible by 4, then its a leap year orelse it’s not a leap year.
In our function, we return true if the user entered year is leap year and return false if the user entered year is not leap year.
Note: User defined function leap has a return type of bool i.e., it returns either true or false. For our C program to support bool type we are including stdbool.h header file.
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