C++第四次作业

最新推荐文章于 2023-05-20 16:33:58 发布

原创最新推荐文章于 2023-05-20 16:33:58 发布 · 496 阅读

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本文介绍了一个 C++ 程序示例，通过 Person 和 Student 类展示了继承的概念，以及如何使用基类指针指向派生类对象。另一个示例展示了 CPerson 和 CEmployee 类之间的继承关系，并介绍了如何重写成员函数。

项目1
#include <iostream>
#include <string>
using namespace std;
class Person{
public:
    Person(string s){
        name=s;
    }
    void display( ){
        cout<<"Name: "<<name<<endl;
    }
private:
    string name;
};
class Student:public Person//(1)
{
public:
    Student(string s, int g):Person(string s),Student(string s, int g)// (2)参考教材P169加底纹部分
    {grade=g;}
    void display1( ) {
        cout<<"name:"<<endl;   //  (3)
        cout<<"Grade: "<<grade<<endl;
    }
private:
    int grade;
};
int main( )
{
    Student s("龙三",19);
    s.display();       //  (4)
    return 0;
}

<pre name="code" class="cpp">项目3
#include<iostream>
#include<string.h>
#include<iomanip>
using namespace std;
class CPerson
{
protected:
    string m_szName;
    string m_szId;
    int m_nSex;//0:女,1:男
    int m_nAge;
public:
    CPerson(string name,string id,int sex,int age);
    void Show1();
    ~CPerson();
};
CPerson::CPerson(string name,string id,int sex)
{
    m_szName=name;

    m_szId=id;

    m_nSex=sex;

    m_nAge=age;
}
void CPerson::Show1()
{
 cout<<m_szName<<setw(10)<<m_szId<<setw(10)<<((m_nSex==0)?"woman":"man")<<setw(8)<<m_nAge<<setw(12);
}
class CEmployee:public CPerson
{
private:
    string m_szDepartment;
    double m_Salary;
public:
    CEmployee(string name,string id,int sex,int age,string department,double salary);
    void Show2();
};
CEmployee::CEmployee(string name,string id,int sex)
{
    m_szDepartment=department;

    m_Salary=salary;

}
void CEmployee::Show2()
{
    cout<<"m_szName"<<setw(10)<<"m_szId"<<setw(12)<<"m_nSex"<<setw(8)<<"m_nAge"<<setw(16)<<"m_szDepartment"<<setw(16)<<"m_Salary"<<endl;
    Show1();
    cout << m_szDepartment<<setw(16)<<m_Salary
}

int main()
{
    string name,id,department;
    int sex,age;
    double salary;
    cout<<"请输入雇员的姓名,ID,性别(0:女,1:男),年龄,部门,薪水:\n";
    cin>>name>>id>>sex>>age>>department>>salary;
    CEmployee employee1(name,id,sex,age,department,salary);
    employee1.Show2();
    return 0;
}