C Language - Digit Reverse

Q1. WAP to reverse a number. E.g: Input: 123, Output: 321.

#include<stdio.h>
#include<conio.h>
void main()
{
   int n, a;
   clrscr();
   printf("Enter number: ");
   scanf("%d",&n);
   printf("Reverse of a number is: ")
   while(n>0)
   {
      a=n%10;
      printf("%d",a);
      n=n/10;
  }
  getch();
}

Enter number: 3495
Reverse of a number is: 5943