- C Programming Examples
- C Programming Examples
- C Print Hello World
- C Get Input from User
- C Print Integer
- C Add Two Numbers
- C Add Subtract Multiply Divide
- C Add n Numbers
- C Area Perimeter of Square
- C Area Perimeter of Rectangle
- C Area Circum of Circle
- C Fahrenheit to Celsius
- C Celsius to Fahrenheit
- C Inches to Centimeters
- C Kilogram to Gram
- C Reverse a Number
- C Swap Two Numbers
- C Interchange Numbers
- C Print ASCII Value
- C Print Fibonacci Series
- C Check Palindrome or Not
- C Check Armstrong or Not
- C Find Armstrong Numbers
- C Find nCr and nPr
- C Find Profit Loss
- C Sum of their Square
- C First & Last Digit Sum
- C Sum of All Digit
- C Product of All Digit
- C Print Total Digit in Number
- C Check Perfect Number
- C Find Basic Gross Salary
- C Round Number to Integer
- C Print Series upto n Term
- C Find Factors of Number
- C if-else & Loop Programs
- C Check Even or Odd
- C Check Prime or Not
- C Check Alphabet or Not
- C Check Vowel or Not
- C Check Leap Year or Not
- C Is Reverse Equal Original
- C Make Calculator
- C Add Digits of Number
- Count Positive Negative Zero
- C Largest of Two Numbers
- C Largest of Three Numbers
- C Smallest of Two Numbers
- C Smallest of Three Numbers
- C Find Factorial of Number
- C Find LCM & HCF
- C Find LCM of n Numbers
- C Find HCF of n Numbers
- C Find Arithmetic Mean
- C Find Average, Percentage
- C Find Student Grade
- C Print Table of Number
- C Print Prime Numbers
- C Find Discount Purchase
- C Calculate Parcel Charge
- C Calculate Wage of Labor
- C Print Phone Bill
- C Conversion programs
- C Decimal to Binary
- C Decimal to Octal
- C Decimal to Hexadecimal
- C Binary to Decimal
- C Binary to Octal
- C Binary to Hexadecimal
- C Octal to Decimal
- C Octal to Binary
- C Octal to Hexadecimal
- C Hexadecimal to Decimal
- C Hexadecimal to Binary
- C Hexadecimal to Octal
- C Pattern Programs
- C Pattern Printing Programs
- C Print Diamond Pattern
- C Print Floyd's Triangle
- C Print Pascal's Triangle
- C Array Programs
- C 1D Array Programs
- C Linear Search
- C Binary Search
- C Largest Element in Array
- C Smallest Element in Array
- C Second Largest/Smallest
- C Count Even Odd
- C Array Element at Even
- C Array Element at Odd
- C Print Even Array Elements
- C Print Odd Array Elements
- C Sum/Product of Even/Odd
- C Reverse an Array
- C Insert Element in Array
- C Delete Element from Array
- C Merge Two Arrays
- C Bubble Sort
- C Selection Sort
- C Insertion Sort
- C Print Common Elements
- C 2D Array Programs
- C Add Two Matrices
- C Subtract Two Matrices
- C Transpose a Matrix
- C Multiply Two Matrices
- C Sum All Matrix Elements
- C Largest Element in Matrix
- C Print Row Column Total
- C 3D Array Programs
- C String Programs
- C Print String
- C Find Length of String
- C Compare Two String
- C Copy a String
- C Concatenate String
- C Reverse a String
- C Count Vowels Consonants
- C Replace Vowel in String
- C Delete Vowels from String
- C Delete Word from String
- C Frequency of Character
- C Count Word in String
- C Remove Spaces from String
- C Sort a String
- C Sort String in Alphabetical
- C Sort Words in Ascending
- C Sort Words in Descending
- C Uppercase to Lowercase
- C Lowercase to Uppercase
- C Swap Two Strings
- C Check Anagram or Not
- C Check Palindrome String
- C Print Number in Words
- C Print Successive Character
- C Character without Space
- C Remove Extra Spaces
- C File Programs
- C Read a File
- C Write Content to File
- C Read & Display File
- C Copy a File
- C Merge Two Files
- C Reverse File
- C Count All Character in File
- C List Files in Directory
- C Encrypt & Decrypt a File
- C Delete a File
- C Misc Programs
- Generate Random Numbers
- C Print Date Time
- C Print Message with Time
- C Get IP Address
- C Print Smiling face
- C Pass Array to Function
- Add Two Numbers using Pointer
- C Address of Variable
- C Shutdown Computer
- C Programming Tutorial
- C Tutorial
- C Programming Library
- C Standard Library
- C Programming Test
- C Programming Test
- Give Online Test
- All Test List
C Program to Check Leap Year
In this article, you will learn and get code about checking any given year is a leap year or not. Before going to the program, here is the formula to check whether the given year is a leap year or not.
- Year that is divisible by 4 but not divisible by 100
- Or, Year that is divisible by 400
To understand, from where this formula came, then refer to Leap Year Formula Explained. Now let's move on and implement it in a C program.
Leap Year Program in C
Now I'm sure that you have complete understanding about what the leap year is and how it gets calculated. So its time to apply it in program:
#include<stdio.h> #include<conio.h> int main() { int year; printf("Enter Year: "); scanf("%d", &year); if((year%4==0) && (year%100!=0)) printf("\nIt's a Leap Year"); else if(year%400==0) printf("\nIt's a Leap Year"); else printf("\nIt's not a Leap Year"); getch(); return 0; }
This program was compiled and executed using Code::Blocks IDE. Here is the first snapshot of sample run:
Supply any year say 2100 as input and press ENTER key to see the output as shown in the snapshot given below:
It is a very simple program, you can easily understand it as all the logic used behind leap year is described in the early of this article. So let's move on the another program using function.
Check Leap Year or Not in C using Function
This program continue checking for leap year, until user wants to terminate it. Because here, we have added some extra code, so that user becomes able to check leap year for any number time at one run only. To check leap year, this program uses function. Let's have a look at it:
#include<stdio.h> #include<conio.h> int checkLeapFun(int); int main() { int year, lORn; char choice='y'; while(choice=='y') { printf("Enter Year: "); scanf("%d", &year); lORn = checkLeapFun(year); if(lORn == 0) printf("It's a Leap Year"); else printf("It's not a Leap Year"); printf("\n\nWant to check more ? (y/n): "); scanf(" %c", &choice); printf("\n"); } getch(); return 0; } int checkLeapFun(int yr) { if((yr%4==0) && (yr%100!=0)) return 0; else if(yr%400==0) return 0; else return 1; }
Here is the sample run of above program:
In this way, you can continue checking until you want to terminate. To check for another year, just press y (for yes) and enter year. And to terminate it, just enter n (for no) or any other character except y.
Program Explained
- Declare any two variable of int (integer) type say year and lORn (leap or not)
- Here year holds year value entered by user, and lORn variable is used to get the return value of function checkLeapFun()
- Declare another variable say choice of char (character) type
- Initialize it with y as its value
- Here y is initialized as initial value of choice so to make the condition choice=='y' evaluates to be true (for first time), to enter into the while loop to process the code further
- Inside the loop, scan the year value from user, and pass it to the function checkLeapFun() with year as its parameter
- Now inside the function, apply the condition of leap year and return its value accordingly
- That is, if it is a leap year, then 0 gets returned, otherwise 1 gets returned and initialized to lORn variable
- After return statement, program flow come back inside the while loop of main() function, and the return value gets initialized to lORn as told in previous step
- Use if-else case to check and print the output according to the value of lORn
- Now scan a character from user, whether he/she want to check for another year or not
- If want to check for more, then press y otherwise press n
- Input character gets initialized to choice variable, and program flow goes to the condition of while loop
- Checks whether it is equal to y or not, if it is, the program flow goes inside the loop again, otherwise program flow terminates the loop and goes to the next statement written after the loop, that is gets();
- That's it
Note - Use space before scanning the character as input, because %c conversion specifier won't automatically skip any leading WhiteSpace. So, from previous entry, if there is a stray newline in input stream, the scanf() call will consume it immediately.
So here we have used:
scanf(" %c", &choice);
as statement of scanning a character. Because the blank, in the format string tells scanf to skip any leading whitespace.
Same Program in Other Languages
« Previous Program Next Program »