You are here

Palindrome number in C

A palindrome number is one that remains the same on reversal. Some examples are 8, 121, 212, 12321, -454. To check if a number is a palindrome or not, we reverse it and compare it with the original number, if both are the same, it's a palindrome otherwise not. C palindrome string program.

C program for palindrome number

#include <stdio.h>

int main()
{
  int n, r = 0, t;

  printf("Enter a number to check if it's a palindrome or not\n");
  scanf("%d", &n);

  t = n;

  while (t != 0)
  {
    r = r * 10;
    r = r + t%10;
    t = t/10;
  }

  if (n == r)
    printf("%d is a palindrome number.\n", n);
  else
    printf("%d isn't a palindrome number.\n", n);

  return 0;
}

Output of the program:
Palindrome number C program output

Download Palindrome number program.

Function to check palindrome number

int check_palindrome(int n) {
  int t, r = 0;

  t = n;

  while (t != 0) {
    r = r * 10;
    r = r + t%10;
    t = t/10;
  }

  if (n == r)
    return 1;
  else
    return 0;
}

Share this