Q. Check whether the no. is strong no. or not ?

THE OUTPUT WOULD BE

#include<stdio.h>
#include<conio.h>
  void main( )
  {        clrscr( );
long int f,i,n,r,s=0,p;
printf("Enter a number:");
scanf("%ld",&n);
p=n;
while(n!=0)
{ r=n%10;
              f=1;
              for(i=1;i<=r;i++)
              f=f*i;
              s=s+f;
              n=n/10;
}
if(p==s)
printf("It is a strong no.=%ld",p);
else
printf("It is not a strong no.");
getch( );
  }