Program to check if number is palindrome or not

A palindrome is number or letter which is same even if you read it from start to end or you read it from end to start.

e.g: level is palindrome.

789987 is palindrome.

Program:

#include<stdio.h>

void main()

{

int n,a,b,c=0;

printf("Enter number of which you want to test: ");

scanf("%d",&n);

a=n;

while(a!=0)

{

b=a%10;

c=(c*10)+b;

a=a/10;

}

if(n==c)

{

printf("Palindrome!!!");

}

else

{

printf("Not Palindrome!!!");

}

}

Output:

Explanation:

Suppose user enters 12321 as value.
So, in first iteration we will get,

a=12321

b=1

c=1

a=1232

In second iteration we will get,

a=1232

b=2

c=10+2=12

a=123

In third iteration we will get,

a=123

b=3

c=120+3=123

a=12

In fourth iteration we will get,

a=12

b=2

c=1230+2=1232

a=1

In fifth iteration we will get,

a=1

b=1

c=1232+1=12321
a=0   

Then while condition will not be followed as a=0.
and as n=c (in this case)
Output will be palindrome as shown in 2nd screenshot above.