Assignment #4

#include <iostream>
using namespace std;
class A
{
private:
int n;
public:
A(); A(int a); void f(); void g();
int h() const; void k() const;
};
A::A() {n = 0;} A::A(int a) {n = a;}
void A::f() {n++;} void A::g() {f(); n = 2*n; f();}
int A::h() const {return n;}
void A::k() const {cout << n << endl;}
int main()
{
A a; A b(2); A c; A d(3);
a.f(); b.g(); c.f(); d.g(); d.k();
A e(a.h() + b.h() + c.h()); e.k();
return 0;
} // end of main