Problem: Write a C program to check whether a number is a Palindrome or not.

Palindrome number is that number which when reversed, is equal to the original number.

Examples: 111, 121, 8008 etc.

Steps to Check Palindrome in C:

1. Input a number.
2. Run while loop with condition `(number != 0)`
3. Divide the number by 10
4. Store the remainder into another variable `reverse` as stated `reverse = reverse *10 + remainder`
5. Update the number as `number = number/10`
6. After the loop ends, check if `reverse == original_number`
7. If yes, then the number is palindrome else not.

Here is the implementation of the steps in C.

``````#include <stdio.h>
#include <stdlib.h>

int main()
{
int original_number, number, remainder, reverse =0;

printf("Enter a Number \n");
scanf("%d",&original_number);

//By copying original_number we are keeping it safe from changes
number = original_number ;

while(number != 0){
remainder = number % 10;
reverse = reverse * 10 + remainder;
number = number / 10;
}

if(original_number == reverse)
printf("Palindrome \n");
else
printf("Not Palindrome \n");

return 0;
}``````

Output

When the input number is 456.

When the input number is 121.

In this tutorial, we learned what is palindrome number and how to check palindrome number in C programming language.