exam2.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 31 行

#include <iostream.h>
class base
{
	int n;
public:
	base(int a) 
	{ 
		cout << "constructing base class"  << endl; 
		n=a;
		cout << "n=" << n << endl;
	}
	~base() { cout << "destructing base class" << endl; }
};
class subs : public base
{
	base bobj;
	int m;
public:
	subs(int a,int b,int c) : base(a),bobj(c) 
	{
		cout << "constructing sub class"  << endl; 
		m=b;
		cout << "m=" << m << endl;
	}
	~subs() { cout << "destructing sub class" << endl; }
};
void main()
{
	subs s(1,2,3);
}