4-9.txt

思路很清晰的c++课件。例子很简明

#include <iostream.h>

class base{
	int x;
public:
	base(int i)
	{ x=i;
	  cout<<"构造base类, x="<<x<<endl;
	}
	~base()
	{ cout<<"析构base类, x="<<x<<endl;
	}
	void show()
	{ cout<<"x="<<x<<endl;
	}
};
class derive:public base{
	int y;
	base d;
public:
	derive(int i,int j,int k):base(i),d(j)
	{ y=k;
	  cout<<"构造derived类, y="<<y<<endl;
	}
	~derive()
	{ cout<<"析构derived类, y="<<y<<endl;
	}
};

void main()
{
	derive obj(1,2,3);
	obj.show();
}