C Program to Check Whether a Number is Palindrome or Not

What is a Palindrome Number ?

A palindromic number is a number that remains the same when its digits are reversed.

For example :- 343 is a palindrome numbers because the reverse of 343 is 343.

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Program to Check Palindrome Number

#include <stdio.h>

int main() {
  int num, remainder, originalNum, reversedNum = 0;
  printf("Enter a Number : ");
  scanf("%d", &num);
  originalNum = num;
  while (num != 0) {
    remainder = num % 10;
    reversedNum = reversedNum * 10 + remainder;
    num /= 10;
  }
  if (originalNum == reversedNum)
    printf("%d is a palindrome number", originalNum);
  else
    printf("%d is not a palindrome number", originalNum);
  return 0;
}

Output

Enter a Number : 454
454 is a palindrome number