#include<iostream.h>
#include<conio.h>
class add
{
private:
int a;
static float pi; // Static Data Member
public:
void getdata(int x) //(:: Scope Resolution)
{
a=x;
}
void display()
{
float c;
c=pi*a*a;
cout<<"\n Answer="<<c;
}
};
float add :: pi=3.14;
main()
{
clrscr();
add a1;
int p,q;
cout<<"Enter p=";
cin>>p;
a1.getdata(p);
a1.display();
getch();
}
