REVERSE OF A NUMBER

/* Reverse Of A Number */
#include<stdio.h>
#include<math.h>
void main()
 {
  int n,rev=0,sum=0,r;
  printf("Enter the number");
  scanf("%d",&n);
  while(n!=0)
   {
    r=n%10;
    rev=(rev*10)+r;
    sum=r+sum;
    n=n/10;
   }
  printf("Reverse is %d ",rev);
  printf("Sum of digit is %d",sum);
}