main.cpp

this a good book.

#include<iostream.h>

class C0
{
public:
	/*******found******/
	C0(int a){this->a = a;};
	void print()
	{
		cout<<"A:a="<<a<<endl;
	}
private:
	int a;
	/*******found******/
	class C1;
};

class C1
{
public:
	/*******found******/
	void print(C0 t)
	{
		(*t).a++; 
		cout<<"C1 print a="<<(*t).a<<endl;
	}
};


void main()
{
	C0 obj1;
	C1 obj2;

	obj1.print();
	obj2.print(&obj1);
	
}