Q. Calculate its factorial ?

THE OUTPUT WOULD BE

#include<iostream.h>
#include<conio.h>
class A
{ long int n,i,f;
public:
void B();
};
void A::B()
{       f=1;
cout<<"Enter n=";
cin>>n;
for(i=1;i<=n;i++)
f=f*i;
cout<<"Factorial of "<<n<<" is "<<f;
}
void main()
{ clrscr();
A obj;
obj.B();
getch();
}