C Program to Check Whether a Given Number is Palindrome Number or Not

Program

#include<stdio.h>
#include<conio.h>

int main()
{
	 long int number, reverse=0, rem, original;
	 clrscr();
	 printf("Enter number: ");
	 scanf("%ld", &number);
	
	 original = number;
	 
	 // Finding Reverse
	 while(number!=0)
	 {
	  rem = number % 10;
	  reverse = reverse*10 + rem;
	  number = number/10;
	 }
	 
	 // Checking for Palindrome
	 if(original == reverse)
	 {
	  printf("%ld is PALINDROME.", original);
	 }
	 else
	 {
	  printf("%ld is NOT PALINDROME.", original);
	 }
	 
	 getch();
	 return(0);
}

Output of the above program :

Run 1:
-------------
Enter number: 12321 ↲
12321 is PALINDROME.

Run 2:
-------------
Enter number: 12345 ↲
12345 is NOT PALINDROME.

Note: ↲ indicates enter is pressed.