类的继承和封装

#include <string.h>

class CEmployee
{
private:
    char m_name[30];

public:
    CEmployee(){};//此处，必须实现，以前C++版本是可以的，但vs2010下不可以
    CEmployee(const char *nm)    {
        strcpy_s(m_name, nm);
    }
};

class CWage : public CEmployee    //時薪職員
{
private:
    float m_wage;    //時薪
    float m_hours;    //時間

public:
    CWage(const char *nm) : CEmployee(nm)    {
        //CEmployee(nm);//構造函數可以直接調用？前面的代碼==此行？
        m_wage = 250.0;
        m_hours = 40.0;
    }

    void setWage(float wage)    {m_wage = wage;}
    void setHours(float hours)    {m_hours = hours;}
};

//銷售員：有時薪，另外還有銷售額
class CSales : public CWage    //銷售員
{
private:
    float m_commission;        //？
    float m_sale;                    //銷售數量

public:
    CSales(const char *name) : CWage(name) {
        m_commission = m_sale = 0.0;
    }
    void setCommission(float commission){m_commission = commission;}
    void setSales(float sale) { m_sale = sale; }
    float computePay();
};

class CManager : public CEmployee
{
private:
    float m_salary;
public:
    CManager(const char*name)    { m_salary = 15000; }
    void setSalary(float salary) { m_salary = salary; }
    float computePay();
};

void main01()
{
    CManager manager("Manager Chen");
    CSales sales("Sales Hou");
    CWage wage("Wage Lee");
}