fig6_1.cpp

这是研究c＋＋中多太性的实例

//fig6_1.cpp
//类Employee的层次结构的测试程序

#include <iostream.h>
#include <assert.h>
#include <iomanip.h>
#include "employ2.h"
#include "boss1.h"
#include "commis1.h"
#include "piece1.h"
#include "hourly1.h"

main()
{
	//设置输出格式
	cout<<setiosflags(ios:: showpoint)<<setprecision(2);

	Employee *ptr;	//基类指针

	Boss b("John", "Smith", 800.00);
	ptr=&b;	//指向派生类对象的基类指针
	ptr->print();						//动态连编
	cout<<"earned $"<<ptr->earnings();	//动态连编
	b.print();							//静态连编
	cout<<"earned $"<<b.earnings();		//静态连编

	CommissionWorker c("Sue", "Jones", 200.0, 3.0, 150);
	ptr=&c;	//基类指针指向派生类对象
	ptr->print();						//动态连编
	cout<<"earned $"<<ptr->earnings();	//动态连编
	c.print();							//静态连编
	cout<<"earned $"<<c.earnings();		//静态连编

	PieceWorker p("Bob", "Lewis", 2.5, 200);
	ptr=&p;	//基类指针指向派生类对象
	ptr->print();						//动态连编
	cout<<"earned $"<<ptr->earnings();	//动态连编
	p.print();							//静态连编
	cout<<"earned $"<<p.earnings();		//静态连编

	HourlyWorker h("Karen", "Price", 13.75, 40);
	ptr=&h;	//基类指针指向派生类对象
	ptr->print();						//动态连编
	cout<<"earned $"<<ptr->earnings();	//动态连编
	h.print();							//静态连编
	cout<<"earned $"<<h.earnings();		//静态连编

	cout<<endl;

	return 0;
}