prog6.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 37 行

#include <iostream.h>
class Sample
{
public:
	Sample();
	Sample(int);
	~Sample();
	void display();
protected:
	int x;
};
Sample::Sample()
{
	x=0;
	cout << "constructing normally\n";
}
Sample::Sample(int m)
{
	x=m;
	cout << "constructing with a number:" << x << endl;
}
void Sample::display()
{
	cout << "display a number:" << x << endl;
}
Sample::~Sample()
{
	cout << "destructing\n";
}
void main()
{
	Sample obj1;
	Sample obj2(20);
	obj1.display();
	obj2.display();
}