C Program to check whether a number is palindrome or not

In this program we use if else if ladder mechanism.

If an integer is equal to the reverse of it, then it is a palindrome. 

Algorithm

In this program we divide the given number by 10 and take the reminder(This could be done by using % operator). 

Arrange the reminders in order to get the reverse of original number. Check whether original number is equal to 

the reverse of it.

//Program

#include 
int main()
{
    int n, reversedInteger = 0, remainder, originalInteger;

    printf("Enter an integer: ");
    scanf("%d", &n);

    originalInteger = n;

    // reversed integer is stored in variable 
    while( n!=0 )
    {
        remainder = n%10;
        reversedInteger = reversedInteger*10 + remainder;
        n /= 10;
    }

    // palindrome if orignalInteger and reversedInteger are equal
    if (originalInteger == reversedInteger)
        printf("%d is a palindrome.", originalInteger);
    else
        printf("%d is not a palindrome.", originalInteger);
    
    return 0;
}