Problem
Write a program in C to check whether a given number is a palindrome or not.
How to find if the number is a palindrome or not in C ?
A palindrome is a number where the reverse of a number is equal to the original number. Here’s a program in C demonstrating how to do it.
#include <stdio.h>
int main()
{
int input, reverseNumber = 0, remainder, initialNumber;
printf("Abundantcode.com coding sample\n");
printf("Enter a number: ");
scanf("%%d", &input);
initialNumber = input;
while( input!=0 )
{
remainder = input%%10;
reverseNumber = reverseNumber*10 + remainder;
input /= 10;
}
if (initialNumber == reverseNumber)
printf("%%d is a palindrome.", initialNumber);
else
printf("%%d is not a palindrome.", initialNumber);
return 0;
}
Output
Abundantcode.com coding sample
Enter a number: 121
121 is a palindrome.