C++第11周项目3 - CEmployee类继承自CPerson类

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课程首页地址：http://blog.csdn.net/sxhelijian/article/details/7910565，本周题目链接：http://blog.csdn.net/sxhelijian/article/details/8894095

【项目3】定义一个名为CPerson的类，有以下私有成员:姓名、身份证号、性别和年龄，成员函数：构造函数、析构函数、输出信息的函数。并在此基础上派生出CEmployee类，派生类CEmployee增加了两个新的数据成员，分别用于表示部门和薪水。要求派生类CEmployee的构造函数显示调用基类CPerson的构造函数，并为派生类CEmployee定义析构函数，定义输出信息的函数。

class CPerson 
{
protected:char *m_szName;char *m_szId;int m_nSex;//0:women,1:manint m_nAge;
public:CPerson(char *name,char *id,int sex,int age);void Show1();~CPerson();  //需要释放建立对象时动态分配的内存
};class CEmployee:public CPerson
{
private:char *m_szDepartment;float m_Salary;
public:CEmployee(char *name,char *id,int sex,int age,char *department,float salary);void Show2();~CEmployee();
};int main()
{char name[10],id[19],department[10];int sex,age;float salary;cout<<"input employee's name,id,sex(0:women,1:man),age,department,salary:\n";cin>>name>>id>>sex>>age>>department>>salary;CEmployee employee1(name,id,sex,age,department,salary);employee1.Show2();return 0;
}

下面的运行结果供参考：

参考解答：

#include <iostream>
#include <string.h>
#include <iomanip>
using namespace std;class CPerson
{
protected:char *m_szName;char *m_szId;int m_nSex;//0:women,1:manint m_nAge;
public:CPerson(char *name,char *id,int sex,int age);void Show1();~CPerson();
};class CEmployee:public CPerson
{
private:char *m_szDepartment;float m_Salary;
public:CEmployee(char *name,char *id,int sex,int age,char *department,float salary);void Show2();~CEmployee();
};CPerson::CPerson(char *name,char *id,int sex,int age)
{m_szName=new char[strlen(name)+1];strcpy(m_szName,name);m_szId=new char[strlen(id)+1];strcpy(m_szId,id);m_nSex=sex;m_nAge=age;
}void CPerson::Show1()
{cout<<setw(10)<<m_szName<<setw(25)<<m_szId;	//setw:设置输出数据的宽度,使用时应#include <iomanip.h>if(m_nSex==0)cout<<setw(7)<<"women";elsecout<<setw(7)<<"man";cout<<setw(5)<<m_nAge<<endl;
}CPerson::~CPerson()
{delete [ ]m_szName;delete [ ]m_szId;
}CEmployee::CEmployee(char *name,char *id,int sex,int age,char *department,float salary)
:CPerson(name,id,sex,age)
{m_szDepartment=new char[strlen(department)+1];strcpy(m_szDepartment,department);m_Salary=salary;
}void CEmployee::Show2()//注意派生类输出函数应输出所有成员变量（含基类继承的成员变量）的值
{cout<<setw(10)<<"name"<<setw(25)<<"id"<<setw(7)<<"sex"<<setw(5)<<"age"<<setw(12)<<"department"<<setw(10)<<"salary"<<endl;cout<<setw(10)<<m_szName<<setw(25)<<m_szId;if(m_nSex==0)cout<<setw(7)<<"women";elsecout<<setw(7)<<"man";cout<<setw(5)<<m_nAge;//由于基类CPerson的成员变量采用了protected属性，因此可采用上述述代码实现，否则若//基类CPerson的成员变量采用了privated属性，则只能使用CPerson::Show();实现cout<<setw(12)<<m_szDepartment<<setw(10)<<m_Salary<<endl;
}CEmployee::~CEmployee()
{delete [ ]m_szDepartment;
}int main()
{char name[10],id[19],department[10];int sex,age;float salary;cout<<"input employee's name,id,sex(0:women,1:man),age,department,salary:\n";cin>>name>>id>>sex>>age>>department>>salary;CEmployee employee1(name,id,sex,age,department,salary);employee1.Show2();return 0;
}

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