Basic C Programming007

If a five digit number is input through the keyboard, write a program to reverse the number. 


#include <stdio.h>
#include <conio.h>
void main ( )
{       
          int         num, p;
          long      revnum = 0;
          clrscr ( );
                                  
          printf ("\n\n\n\t Enter a five digit number (less than 32767)...:"); scanf ("%d",&num);
             
          p = num % 10;                                 /* last digit extracted as reminder */
          num = num /10;                                /* remaining digits */
          revnum = revnum + p * 10000L;      /* revnum updated with value of extracted digit */
                                                                    
          p = num % 10;                                 /* fourth digit */
          num = num /10;                                /* remaining digits */
          revnum = revnum + p * 1000;                          
                                                                                          
          p = num % 10;                                 /* third digit */
          num = num /10;                                /* remaining digits */
          revnum = revnum + p * 100;                     
                                                                                         
          p = num % 10;                                 /* second digit */
          num = num /10;                                /* remaining digits */
          revnum = revnum + p * 10;                               
                                                                                                 
          p = num % 10;                                 /* first digit */
          revnum = revnum + p;
                              
          printf ("\n\n\n\t The reversed number is...:%ld", revnum);
          getch ( );
}

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