Write a C program to test armstrong number.

#include <stdio.h>

void main()

{

   int num, sum = 0, temp, rem;

   printf("Enter an integer\n");

   scanf("%d",&num);

   temp = num;

   while( temp != 0 )

   {

      rem = temp%10;

      sum = sum + rem*rem*rem;

      temp = temp/10;

   }

   if ( num == sum )

      printf("Entered number is an armstrong number.\n");

   else

      printf("Entered number is not an armstrong number.\n");

 }