ARMSTRONG NUMBER in c programming language

void main()

{

int num,r,sum=0,temp;

clrscr();

printf("\nEnter a number:-");

scanf("%d",&num);

temp=num;

while(num!=0)

{

r=num%10;

num=num/10;

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

}

if(sum==temp)

printf("\nThe number %d is an armstrong number",temp);

else

printf("\nThe number %d is not an armstrong number",temp);

getch();