Program in C to check whether the given number is armstrong or not

Write a program in C to check whether the given number is armstrong or not

#include<stdio.h>

#include<conio.h>

void main()

{

          int n,r,t,sum=0;

          clrscr();

          printf("  OUTPUT :\n");

          printf("\tEnter a no.");

          scanf("%d",&n);

          t=n;

          while(n!=0)

          {

                   r=n%10;

                   sum=sum+r*r*r;

                   n=n/10;

          }

          if(sum==t)

                   printf("The no. %d is armstrong",t);

          else

                   printf("The no. %d is not an armstrong",t);

          getch();

}