- A leap year comes once in four years, in which February month has 29 days. With this additional day in February, a year becomes a Leap year .
- Some leap years examples are - 1600, 1988, 1992, 1996, and 2000.
- Although 1700, 1800, and 1900 are century years, not leap years.
To determine if a year is a leap year or not, the following criteria are applied:
- The year must be a multiple of 4.
- The year should be divisible by 400 and not divisible by 100.
By incorporating these criteria into your code, you can verify if a year is a leap year or not. Meeting the specified conditions will determine whether the year is indeed a leap year. You have the option to implement these conditions using if-else statements or by utilizing the logical operators && (and) and || (or).
How to find leap year using C programming?
By utilizing a C program, we can simplify the process of determining whether a year is a leap year or not.
Example
Explore the following example demonstrating how to verify a leap year by accepting user input:
#include<stdio.h>
#include<conio.h>
void main() {
int year;
printf("Enter a year: ");
scanf("%d", &year);
if(((year%4==0) && ((year%400==0) || (year%100!==0))
{
printf("%d is a leap year", &year);
} else {
printf("%d is not a leap year", &year);
}
getch();
}
Output
See the below outputs for different input values:
Test 1:
Enter a year: 2004
2004 is a leap year
Test 2:
Enter a year: 1700
1700 is not a leap year
Example
In the following illustration, we will identify the leap years within a specified range of years, such as from 2000 to 2020. Review the demonstration below:
#include<stdio.h>
#include<conio.h>
void main() {
int startYear, endyear, i;
printf ("Enter a year to start searching the leap years: ");
scanf ("%d", &startYear);
printf ("Enter a year to end the search of leap years: ");
scanf ("%d", &endyear);
printf ("Leap Years between %d to %d are: \n", &startYear, &endYear);
for (i= startYear; i<= endYear, i++)
{
if(((i%4==0) && ((i%400==0) || (i%100!==0))
{
printf("%d \n", &i);
}
}
getch();
}
Output
See the below output:
Enter a year to start searching the leap years: 1950
Enter a year to end the search of leap years: 2020
Leap years between 1990 to 2020 are:
1992
1996
2000
2004
2008
2012
2016
2020