CHECK THE NUMBER IS STRONG NUMBER OR NOT

import java.util.*;
class strongnum
{
public static void main(string args[])
{
int n,fs,d,n1;
scanner os=new scanner (system.in);
system.out.println("enter n value");
n=os.next int();
fs=0;
n1=n;
do
{
d=n%10;
fs=fs+fact(D);
n=n/10;
}
while(n!=0);
if(n==fs)
system.out.println("strong number");
else
system.out.println("not strong number");
}
static int fact(int k);
{
int f,i;
f=1;
for(i=1;i,=k;i++)
f=f*i;
return(f);
}
}