# C Program to Check Palindrome Number

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In this article, you will learn and get code to check whether the given number by user (at run-time) is a palindrome number or not. But before going to the program, let's first understand, which number can be called as palindrome.

### What is a Palindrome Number ?

If a number is equal to its reverse is called as a palindrome number. For example, 12321 is a palindrome number, because its reverse (12321) is equal to the number itself. Whereas 12345 is not a palindrome number because its reverse (54321) is not equal to the number itself.

## Check Palindrome or Not

Now let's create a program that checks for a Palindrome number.

```#include<stdio.h>
#include<conio.h>
int main()
{
int num, rev=0, rem, temp;
printf("Enter a Number: ");
scanf("%d", &num);
temp = num;
while(temp>0)
{
rem = temp%10;
rev = (rev*10)+rem;
temp = temp/10;
}
if(rev==num)
printf("\nIt's a Palindrome Number");
else
printf("\nIt's not a Palindrome Number");
getch();
return 0;
}```

This program was build and run under Code::Blocks IDE. Here is its sample run:

Now supply any number say 12321 as input and press `ENTER` key to see the following output:

As already told that if a reverse of a number is equal to the original number, then it will be a palindrome number. Therefore, we have just reversed the number and compares it with original. If it is equal then print it as a palindrome, otherwise print it as not a palindrome using if-else statement

## Check Palindrome Number using for Loop

Now let's create the same purpose program using for Loop

```#include<stdio.h>
#include<conio.h>
int main()
{
int num, rev=0, rem, temp;
printf("Enter a Number: ");
scanf("%d", &num);
for(temp = num; temp>0; temp=temp/10)
{
rem = temp%10;
rev = (rev*10)+rem;
}
if(rev==num)
printf("\nIt's a Palindrome Number");
else
printf("\nIt's not a Palindrome Number");
getch();
return 0;
}```

It will produce the same output as of previous program. Here is it sample run, if user enters a number whose reverse it not equal to original one.

#### Same Program in Other Languages

C Online Test

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