10.10.cpp

这是C++的一部分练习程序!对初学者有一定的帮助作用。

#include <iostream.h>
class A
{
  public:
	A(int i)
	{  
		a=i;
		cout<<"Constructor called.A\n";
	}
	~A()
	{  cout<<"Destructor called.A\n";  }
	void Print()
	{  cout<<a<<endl;  }
  private:
	int a;
};
class B
{
  public:
	B(int i)
	{
		b=i;
		cout<<"Constructor called.B\n";
	}
	~B()
	{  cout<<"Destructor called.B\n";  }
	void Print()
	{  cout<<b<<endl;  }
  private:
	int b;
};
class C
{
  public:
	C(int i)
	{
		c=i;
		cout<<"Constructor called.C\n";
	}
	~C()
	{  cout<<"Destructor called.C\n";  }
	int Getc()
	{  return c;  }
  private:
	int c;
};
class D:public A,public B
{
  public:
	D(int i,int j,int k,int l):B(i),A(j),c(l)
	{
		d=k;
		cout<<"Constructor called.D\n";
	}
	~D()
	{  cout<<"Destructor called.D\n";  }
	void Print()
	{
		A::Print();
		B::Print();
		cout<<d<<','<<c.Getc()<<endl;
	}
  private:
	int d;
	C c;
};
void main()
{
	D d(5,6,7,8);
	d.Print();
	B b(2);
	b=d;
	b.Print();
}