C Program to Check Palindrome Number

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What is Palindrome Number?

A palindrome number is a number that remains the same when its digits are reversed. For example, 55 is a palindrome number.

Note: The reverse of 55 is also a 55. Hence, 55 is a palindrome number.

Tips: It is recommended to use our online Palindrome Numbers calculator for better understanding.

Check Palindrome Number

In the following example, we will check whether the given number (121) is a Palindrome number or not.

Example

C Compiler
#include <stdio.h> int main() { int num = 121; int copyNum = num; int reverse = 0; // reverse a number while(copyNum != 0) { reverse = reverse * 10; reverse = reverse + (copyNum % 10); copyNum = copyNum / 10; } // result if(num == reverse) printf("%d is a palindrome number", num); else printf("%d is not a palindrome number", num); return 0; }

Palindrome Numbers between the Given Range

In the following example, we will find all the Palindrome numbers between 10 and 50.

Example

C Compiler
#include <stdio.h> int main() { int start = 10; int end = 50; int copyNum = 0; int reverse = 0; int flag = 0; printf("Palindrome numbers between %d and %d:\n", start, end); for(start=start; start<=end; start++) { copyNum = start; reverse = 0; // reverse a number while(copyNum != 0) { reverse = reverse * 10; reverse = reverse + (copyNum % 10); copyNum = copyNum / 10; } // result if((start == reverse) && (start != 0)) { flag = 1; printf("%d ",start); } } if(flag == 0) printf("There is no palindrome number between the given range"); return 0; }

Check Whether the Given Number is Palindrome or Not

In the following example, we will check whether the given number is a Palindrome Number or Not.

Example

C Compiler
#include <stdio.h> int main() { int reverse = 0; int num; printf("Enter a (int) Number: "); scanf("%d", &num); int copyNum = num; // reverse a number while(copyNum != 0) { reverse = reverse * 10; reverse = reverse + (copyNum % 10); copyNum = copyNum / 10; } // result if(num == reverse) printf("%d is a palindrome number", num); else printf("%d is not a palindrome number", num); return 0; }

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