C Code To Check Whether A No. Is Palindrome Or Not

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A Palindrome number is a number, which when reversed in order of digits, produces the same number a the original one. Some examples of Palindrome numbers are: 11, 121, 1331. 14641, 15101051, 989, 5225 etc. The C program for the same is very simple. First we will reverse the original number and then check it with the original number. If found same, number is palindrome, otherwise not.
A Simple Algorithm for the same will be:

1. Input number from user, 'num'.
2. Apply Logic on 'num', produce reversed number 'rev'.
3. If num == rev, print 'num' is Palindrome.
4. Otherwise print 'num' is not Palindrome.

C Program To Check Whether A Number Is Palindrome Or Not:

/* Double-Click To Select Code */

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

void main()
{
 int a,b,c,d;
 clrscr();
 printf("Enter a number: ");
 scanf("%d",&a);
 b=a;
 d=0;

 while(a!=0)
 {
  d = d*10;
  c = a%10;
  a = a/10;
  d = d+c;
 }

 if(d==b)
 printf("\nThe number %d is plaindrome",b);

 else
 printf("\nThe number %d is not Palindrome",b);

 getch();
}

Program Output:

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