C Program to print the digits of a number in reverse order.

/*=================================================================================
**
**  File Name     : revDigit.c
**  Creation Date : Mon 15 Feb 2016 09:18:11 PM IST
**  Last Modified : Mon 15 Feb 2016 09:42:45 PM IST
**  Compoler      : gcc
**  Author        : Manoj Kumar Patra, manojpatra.in@gmail.com
**  Organization  : SCIS, University of Hyderabad, India.
**
**===============================================================================*/

#include<stdio.h>
int main()
{
    printf("\n= = = = = = = = = Reverse the Number = = = = = = = = = = =");
    int no, rev, rem;
    printf("\nEnter the number to be reversed : ");
    scanf("%d", &no);
    while(no)
    {
        rem = no%10;
        no = no/10;
        //printf("%d",rem);
        rev = (rev*10)+rem;
    }
    printf("\nThe reverse number of %d is : %d\n",no, rev);
    printf("\n= = = = = = = = = = = = = = = = = = = = = = = = = = = = =\n\n");
}

Output:

max@ubuntu:~/cprog$ gcc revDigit.c -o revDigit
max@ubuntu:~/cprog$ ./revDigit

= = = = = = = = = Reverse the Number = = = = = = = = = = =
Enter the number to be reversed : 12345

The reverse number of 0 is : 54321

= = = = = = = = = = = = = = = = = = = = = = = = = = = = =