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Write a C program to input number from user and check number is palindrome or not using loop.

Write a C program to input number from user and check number is palindrome or not using loop.
How to check whether a number is palindrome or not using loop in C programming.

What is Palindrome number?

Palindrome number is such number which when reversed is equal to the original number. For example: 121, 12321, 1001 etc.

    Input a number from user. Store it in some variable say j.
    Find reverse of the given number. Store it in some variable say reverse.
    Compare j with reverse. If both are same then the number is palindrome otherwise not.

Program to check palindrome number

#include <stdio.h>

int main()
{
    int n, j, rev = 0;

    /* Input a number from user */
    printf("Enter any number to check palindrome: ");
    scanf("%d", &n);

    /* Copy original value to 'j' to 'n'*/
    j = n; 

    /* Find reverse of n and store in rev */
    while(n != 0)
    {
        rev = (rev * 10) + (n % 10);
        n  /= 10;
    }

    /* Check if reverse is equal to 'j' or not */
    if(rev == j)
    {
        printf("%d is palindrome.", j);
    }
    else
    {
        printf("%d is not palindrome.", j);
    }

    return 0;
}

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