Program to reverse a number.

#include<stdio.h>

#include<conio.h>

void main()

{

                long rev = 0, rem , n;

                clrscr();

                printf("\n Enter the number ");

                scanf("%ld",&n);

                while(n>0)

                {

                                 rem=n%10;

                                 n=n/10;  

                                 rev=rev*10 +rem;

                }

                printf("\n The reverse number = %ld",rev);

 }