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声明一个Employee类，其中包括姓名、街道地址、城市、和邮编等属性，包括change_name()和display()等函数；display()使用cout语句显示姓名、街道地址、城市、和邮编等属性，函数change_name()改变对象的姓名属性，实现并测试这个类。
要求：
1. Employee类中应包括缺省构造函数、拷贝构造函数、带默认形参值的构造函数、构造函数重载、析构函数。
2. 定义三个Employee类对象Person1, Person2, Person3，分别用缺省构造函数、带默认形参值的构造函数、拷贝构造函数初试化。
3. 定义一个Employee类指针对象Pointer， 分别用指针Pointer与对象Person1, 或Person2, 或Person3调用Employee类成员函数。
4. 程序采用多文件结构形式。
       有谁帮忙做出来啊，急于要交作业啊！


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******//employee.h//******
//头文件定义如下：
class employee
{
  public:
   employee();
   employee(char * name1,char * streetad,char * city1 ,char * postnum);
   employee( employee & emp);
  ~employee();
{
  delete []name;
  delete []streetadd;
  delete []city;
  delete []postnumber;
}
   void  change_name(char *);
  void display() const;
{
  cout<<"name:"<  cout<<"streetadd:"<  cout<<"city:"<  cout<<"postnumer:"<}
private:
   char * name;
   char * streetadd;
   char * city;
   char * postnumber;
};
******//employee.cpp//********
#include
#include"string.h"
employee::employee()
{
  strcpy(name,"default");
  strcpy(streetadd,"default");
  strcpy(city,"default");
  strcpy(postnumber,"default");
}
employee::employee(char * name1,char * streetad,char * city1 ,char * postnum)
{
 name= new char[strlen(name1)+1];
 strcpy(name,name1);
 streetadd =new char[strlen(streetad)+1];
 strcpy(streetadd,streetad);
 city= new char[strlen(city1)+1];
 strcpy(city,city1);
 postnumer=new char[strlen(postnum)+1];
 strcpy(postnumber,postnum);
}
employee::employee(employee &emp)
{
 strcpy(name,emp.name);
 strcpy(streetadd,emp.streetadd);
 strcpy(city,emp.city);
 strcpy(postnumber,enp.postnumber);
)
void employee:: change_name(char * name2)
{
 strcpy(name,name2);
}
******//main.cpp//*********
#include
#include
#include"employee.h"
void main()
{
 employee person1;
 employee person2("wangming","beijing xilu 24","biejing","010");
 employee person3(person2);
 employee *pointer =new employee(person2);
 pointer->disaply();
 pointer->chang_ename("chengnan");
 pointer->disaply();
}
   

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