C++编程 多态和纯虚函数的例子

#ifndef _EMPLOYEE_H
#define _EMPLOYEE_H

#include <iostream>
#include <string>

using namespace std;

class Employee
{
protected:
	static int num;
	int m_id;
	string m_name;
	double m_Salary;
public:
	Employee();
	virtual double GetSalary() = 0;
	virtual void show() = 0;
};

class Manager : virtual public Employee
{
protected:
	int m_base;
public:
	Manager(string n, int b);
	double GetSalary();
	void show();
};

class Technician : public Employee
{
private:
	int m_day;
public:
	Technician(string n, int d);
	double GetSalary();
	void show();
};

class SaleMan : virtual public Employee
{
protected:
	static int sale_sum;
	int m_sale;
public:
	SaleMan(string n, int s);
	double GetSalary();
	void show();
};

class SaleManager : public SaleMan, public Manager
{
public:
	SaleManager(string n);
	double GetSalary();
	void show();
};

#endif

//公司有四种职位 经理（Manager） 技术人员（Technician） 销售（SaleMan） 销售经理（SaleManager）
//每增加一个人，工号加1
//薪资：经理 8000 技术人员 300/天 销售 总额*4% 销售经理 部门销售额*2%+4000

#include "Employee.h"
#include <iostream>

using namespace std;

int Employee::num = 0;
int SaleMan::sale_sum = 0;

Employee::Employee()
{
	num++;
	m_id = num;
}

Manager::Manager(string n, int b = 8000)
{
	m_name = n;
	m_base = b;
}

double Manager::GetSalary()
{
	m_Salary = m_base;
	return m_base;
}

void Manager::show()
{
	cout << "名字：" << m_name << " 工号：" << m_id << " 工资：" << GetSalary() << endl;
}

Technician::Technician(string n, int d)
{
	m_name = n;
	m_day = d;
}

double Technician::GetSalary()
{
	m_Salary = 300 * m_day;

	return m_Salary;
}

void Technician::show()
{
	cout << "名字：" << m_name << " 工号：" << m_id << " 工资：" << GetSalary() << endl;
}

SaleMan::SaleMan(string n, int s = 0)
{
	m_name = n;
	m_sale = s;
	sale_sum += m_sale;
}

double SaleMan::GetSalary()
{
	m_Salary = m_sale * 0.04;
	return m_Salary;
}

void SaleMan::show()
{
	cout << "名字：" << m_name << " 工号：" << m_id << " 工资：" << GetSalary() << endl;
}


SaleManager::SaleManager(string n) : SaleMan(n), Manager(n, 4000)
{

}

double SaleManager::GetSalary()
{
	m_Salary = m_base + sale_sum * 0.02;
	return m_Salary;
}

void SaleManager::show()
{
	cout << "名字：" << m_name << " 工号：" << m_id << " 工资：" << GetSalary() << endl;
}

#include "Employee.h"
#include <iostream>

using namespace std;

int main()
{
	srand(time(NULL));
	char name[20] = {0};
	Employee *pt[5] = {0};
	Employee *ps[10] = {0};
	Employee *psm = NULL;
	Employee *pm = new Manager("aa", 8000);
	pm->show();

	for (int i = 0; i < 5; i++)
	{
		sprintf(name, "Technician%d", i);
		pt[i] = new Technician(name, rand() % 22 + 1);
		pt[i]->show();
	}

	for (int i = 0; i < 10; i++)
	{
		sprintf(name, "S%d", i);
		ps[i] = new SaleMan(name, rand() % 200000);
		ps[i]->show();
	}
	
	psm = new SaleManager("bb");
	psm->show();

	
	return 0;
}