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 <iostream>#include <string.h>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;}