Program of Palindrome number.

 What is Palindrome number  ?

A palindrome  number is a number  that remains same when digits are reversed. For example, the number 1551 is a palindrome number, but 1541 is not a palindrome number. 

* note : Negative number can not be palindrome.

Now here we understand the following program is palindrome or not.

#include<stdio.h>

int reverse(int);

int palindrome(int);

int main()

{

    int num;

    printf("Enter the number check

it isPalindrome or not : ");

    scanf("%d",&num);

    if(palindrome(num))

// 1 for true or 0 for false

    {

        printf("%d is palindrome.\n",num);

    }

    else

    {

        printf("%d is not palindrome.",num);

    }

    return 0;

}

int palindrome(int n)

{

    if(n==reverse(n)) // if reverse and

the number is equal then it isPalindrome.

        return 1;

    else

        return 0;

}

int reverse(int x)

{

    int rem,rev=0;

    while(x!=0)

    {

        rem=x%10;

        rev=rev*10+rem;

        x=x/10;

    }

    return rev;

}

Output :

Enter the number check it isPalindrome or not : 1221 1221 is palindrome.

So , above program find that Number is palindrome or not.