（下面是全部完整的代码）
#include<iostream
using namespace std;
#include<string
class Person //声明基类Person
{
public:
Person(char *Name, char Sex, int Age ) //基类构造函数
{
strcpy(name, Name); sex = Sex; age = Age;
cout << " The constructor of base class Person is called." << endl;
}
~Person( ) //基类析构函数
{ cout << " The destructor of base class Person is called." << endl; }
void Show( )
{
cout << " The person's name: " << name << endl;
cout << " sex: " << sex << endl;
cout << " age: " << age << endl;
}
protected: //基类的保护数据成员
char name[11]; //姓名，不超过5个汉字
char sex; //性别，M：男，F：女
int age; //年龄
}
;
class Student: virtual public Person //声明基类Person的公用派生类Student——大学生类
{
public:
Student(char *Name, char Sex, int Age, char *Id, char *Date, float Score): Person(Name, Sex, Age) //派生类构造函数
{ //在构造函数的函数体中只对派生类新增的数据成员初始化
strcpy(id, Id); strcpy(date, Date); score = Score;
cout << " The constructor of derived class Student is called." << endl;
}
~Student( ) //派生类析构函数
{ cout << " The destructor of derived class Student is called." << endl; }
void StuShow( )
{
cout << " student's id: " << id << endl;
cout << " name: " << name << endl;
cout << " sex: " << sex << endl;
cout << " age: " << age << endl;
cout << " enrollment date: " << date << endl;
cout << " enrollment score: " << score << endl;
}
protected:
char id[12]; //学号，固定为11位
char date[11]; //入学时间
float score; //入学成绩
};
//声明Student类的公用派生类Graduate——研究生类
class Graduate: public Student
{
public:
//派生类的构造函数
Graduate(char *Name, char Sex, int Age, char *Id, char *Date, float Score, char *Direct, char *Teacher)
:Person(Name, Sex, Age),Student(Name, Sex, Age, Id, Date, Score)
{ //在构造函数的函数体中只对派生类所新增的数据成员初始化
strcpy(direct, Direct); strcpy(teacher, Teacher);
cout << " The constructor of derived class Graduate is called." << endl;
}
void GradShow( )
{
StuShow( );
cout << " direct: " << direct << endl;
cout << " teacher name: " << teacher << endl;
}
~Graduate( ) //派生类的析构函数
{ cout << " The destructor of derived class Graduate is called." << endl; }
protected: //派生类的保护数据成员
char direct[21]; //研究方向，不超过10个汉字
char teacher[11]; //导师姓名，不超过5个汉字
};
class Employee:
virtual public Person //声明基类Person的公用派生类Employee——职工类
{
public:
Employee(char *Name, char Sex, int Age, char *Num, char *Clerk, char *Depart, char *Timer): Person(Name, Sex, Age) //派生类构造函数
{
strcpy(num, Num); strcpy(clerk, Clerk);
strcpy(department, Depart); strcpy(timer, Timer);
cout << " The constructor of derived class Employee is called."<< endl;
}
~ Employee( ) //派生类析构函数
{ cout << " The destructor of derived class Employee is called." << endl; }
void EShow( )
{
cout << " employee’s num: " << num << endl;
cout << " clerk: " << clerk << endl;
cout << " department: " << department << endl;
cout << " timer: " << timer << endl;
}
void EmpShow( )
{
Show( );
cout << " employee’s num: " << num << endl;
cout << " clerk: " << clerk << endl;
cout << " department: " << department << endl;
cout << " timer: " << timer << endl;
}
protected: //派生类的保护数据成员
char num[8]; //职工编号，固定为7位字符
char clerk[21]; //职称，不超过10个汉字
char department[31]; //部门，不超过15个汉字
char timer[11]; //工作时间
};
//声明Graduate 和Employee的共同派生类GradOnWork——在职研究生类
class GradOnWork: public Graduate, public Employee
{
public:
GradOnWork(char *Name, char Sex, int Age, char *Id, char *Date, float Score,
char *Direct, char *Teacher, char *Num, char *Clerk, char *Depart, char *Timer):
Person(Name, Sex, Age),
Graduate(Name, Sex, Age, Id, Date, Score, Direct, Teacher),
Employee(Name, Sex, Age, Num, Clerk, Depart, Timer) //派生类构造函数
{
cout << " The constructor of derived class GradOnWork is called."<< endl;
}
~GradOnWork( ) //派生类析构函数
{
cout << " The destructor of derived class GradOnWork is called." << endl;
}
void GWShow( )
{
cout << " Be the graduate:" << endl;
GradShow( );
cout << " Be the employee:" << endl;
EShow( );
}
};
int main( )
{
GradOnWork obj("Mary", 'F', 19, "20120101001", "2012.09.01", 680,
"Computer", "Johnson", "JG01029", "Senior Engineer", "Research Department", "20 years");
obj.Show( );//只输出在职研究生的姓名、性别和年龄
return 0;
}
