C program to reverse a number

#include <stdio.h>
#include <conio.h>
void main()
{
   int num, reverse = 0,digit;
   printf("Enter a number to reverse\n");
   scanf("%d", &num);
 
   while (num != 0)
   {
      digit   = num % 10;
      reverse = reverse*10 + digit;
      num     = num/10;
   }
 
   printf("Reverse of entered number is = %d\n", reverse);
 
   return 0;
}