员工信息管理系统（c++继承）

简单介绍

• 在员工（Staff）类中有一个属性是教育背景，它又包含了毕业院校和员工学历两个属性，因此把教育背景设计成一个CEducation类，而由他创建的对象作为一个子对象组合出Staff类。
• 从企业员工中划分出来的销售人员、行政人员和经理都具有企业员工的一般特征，因此这三个类可以继承Staff类，而销售经理同时具有销售人员和经理这两个类的共同特征，因此该类可以由这两个类共同派生出来。由此产生一个局部的多继承关系。在这个局部多继承关系中，Staff类是公共基类，销售经理类就是公共派生类。为了避免二义性的发生，可以把Staff类声明为虚基类。为了避免繁琐的初始化，所有的虚基类的构造函数都不带参数，他们的数据成员都通过键盘录入的方式进行有效的赋值。

代码

education.h

#ifndef __EDUCATION__H__
#define __EDUCATION__H__
#include 
#include 
using namespace std;
const int LEN = 50;

class CEducation
{
public:
    CEducation();
    CEducation(char cSchool[], char cDegree);
    ~CEducation();
    void GetEdu(void);
    void PutEdu(void) const;
private:
    char m_cSchool[LEN];
    char m_cDegree;
};

class Staff
{
public:
    Staff();
    ~Staff();
    void CalculateSal();
    void OutPut();
    void InPut();

protected:
    CEducation Edu;
    int m_iStaffNum;
    char m_cName;
    float m_fRateOfAttend;
    float m_fBasicSal;
    float m_fPrize;
    static int s_iCount;
};

class CAdminStaff: public Staff
{
public:
    CAdminStaff();
    ~CAdminStaff();
    void CalculateSal();
};

class CManager: virtual public Staff
{
public:
    CManager();
    ~CManager();
    void SetMData();
    void CalculateSal();

protected:
    float m_fDeductTRate;
    float m_fTAmount;
};

class CSaleMan: virtual public Staff
{
public:
    CSaleMan();
    ~CSaleMan();
    void SetSData();
    void CalculateSal();
protected:
    float m_fDeductRate;
    float m_fPersonAmount;
};

class CSaleManager: public CSaleMan, public CManager
{
public:
    CSaleManager();
    ~CSaleManager();
    void CalculateSal();
};
#endif

education.cpp

#include "education.h"
int Staff::s_iCount = 1000;

CEducation:: CEducation(){};

CEducation:: CEducation(char cSchool[], char cDegree)
{
    strcpy(m_cSchool, cSchool);
    m_cDegree = cDegree;
}

CEducation:: ~CEducation(){};

void CEducation:: GetEdu(void)
{
    cout << "School:"<< endl;
    cin >> m_cSchool;
    cout << "Degree:"<< endl;
    cin >> m_cDegree;
    m_cDegree = toupper(m_cDegree);
}

void CEducation:: PutEdu(void) const
{
    cout << "School: " << m_cSchool << endl;
    cout << "Degree: ";
    switch (m_cDegree)
    {
        case 'c':
            cout << "college" << endl;
            break;
        case 'u':
            cout << "undergraduate college" << endl;
            break;
        case 'M':
            cout << "master" << endl;
            break;
        case 'D':
            cout << "doctor" << endl;
            break;
        default:
            cout << "void" << endl;
            break;
    }
}

Staff:: Staff(){};

Staff:: ~Staff(){};

void Staff:: CalculateSal(){};

void Staff:: InPut()
{
    m_iStaffNum = ++s_iCount;
    cout << "No: "<< m_iStaffNum << endl;
    cout << "name :";
    cin >> m_cName;
    Edu.GetEdu();
    cout << " Basic salary:";
    cin >> m_fBasicSal;
    cout << " Prize: ";
    cin >> m_fPrize;
    cout << "Rate Of Attend: ";
    cin >> m_fRateOfAttend;
    if (m_fRateOfAttend > 1.0)
    {
        m_fRateOfAttend = 1.0;
    }
    else if (m_fRateOfAttend < 0)
    {
        m_fRateOfAttend = 0;
    }
}

void Staff:: OutPut()
{
    cout << "No: " << m_iStaffNum << endl;
    cout << "name: " << m_cName << endl;
    Edu.PutEdu();
    cout << "basic saraly: " << m_fBasicSal << endl;
    cout << "Prize: " << m_fPrize << endl;
    cout << "Rate of Attend" << m_fRateOfAttend * 100 << "%" << endl;

}
CAdminStaff:: CAdminStaff(){};

CAdminStaff:: ~CAdminStaff(){};

void CAdminStaff::CalculateSal()
{
    cout << "the fact salary:";
    cout << m_fBasicSal + m_fRateOfAttend * m_fPrize << endl;
}

CManager:: CManager(){};

CManager:: ~CManager(){};

void CManager:: SetMData()
{
    cout << "the company sales";
    cin >> m_fTAmount;
    cout << "the rates of person getted";
    cin >> m_fDeductTRate;
}

void CManager:: CalculateSal()
{
    cout << "the fact salary:";
    cout << m_fBasicSal + m_fDeductTRate * m_fTAmount << endl;
}

CSaleMan :: CSaleMan(){};

CSaleMan :: ~CSaleMan(){};

void CSaleMan:: SetSData()
{
    cout << "the person sales";
    cin >> m_fPersonAmount;
    cout << "the rates of person getted";
    cin >> m_fDeductRate;
}

void CSaleMan:: CalculateSal()
{
    cout << "the fact salary:";
    cout << m_fBasicSal + m_fPersonAmount * m_fDeductRate << endl;
}

CSaleManager:: CSaleManager(){};

CSaleManager:: ~CSaleManager(){};

void CSaleManager:: CalculateSal()
{
    cout << "the fact salary:";
    cout << m_fBasicSal + m_fPersonAmount * m_fDeductRate
    + m_fTAmount * m_fDeductTRate << endl;
}

main.cpp

#include "education.h"
int main(int argc, char const *argv[])
{
    char flag = 'Y';
    while (toupper (flag) == 'Y')
    {
        cout << "1.maneger  2.saleman   3.saleanager    4.administor" << endl;
        int n;
        cin >> n;
        switch(n)
        {
            case 1:
            {
                CManager staff;
                staff.InPut();
                staff.SetMData();
                staff.OutPut();
                staff.CalculateSal();
                break;
            }
            case 2:
            {
                CSaleMan staff;
                staff.InPut();
                staff.SetSData();
                staff.OutPut();
                staff.CalculateSal();
                break;
            }
            case 3:
            {
                CSaleManager staff;
                staff.InPut();
                staff.SetMData();
                staff.SetSData();
                staff.OutPut();
                staff.CalculateSal();
                break;
            }
            case 4:
            {
                CAdminStaff staff;
                staff.InPut();
                staff.OutPut();
                staff.CalculateSal();
                break;
            }
            default:
            {
                cout << "error" << endl;
                break;
            }
        }
        cout << "continue?(y/n)" << endl;
        cin >> flag;
    }
    return 0;
}