C program to check whether a number is Armstrong

#include<stdio.h>

#include<conio.h>

void main()

{

 int num,r,sum=0,temp;

clrscr();

printf("Enter a number:\n");

scanf("%d",&num);

temp=num;

while(num!=0)

{

r=num%10;

sum=sum+(r*r*r);

num=num/10;

}

if(sum==temp)

printf("The number is Armstrong");

else

printf("The number is not Armstrong");

getch();

}