类之间的访问示例（P185）

#include<iostream>
#include<string>
using namespace std;

class CStudent //基类
{
private:
string name; //姓名
string id; //学号
char gender; //性别，‘F’代表女生，‘M’代表男生
int age;
public:
void PrintInfo();
void SetInfo(const string &,const string &,int,char);
void SetName(string);
string GetName();
void SetId(string);
string GetId();
};

void CStudent::PrintInfo()
{
cout<<"姓名:\t"<<name<<endl;
cout<<"学号:\t"<<id<<endl;
cout<<"年龄:\t"<<age<<endl;
cout<<"性别:\t"<<gender<<endl;
}

void CStudent::SetInfo(const string & name_,const string & id_,int age_,char gender_)
{
name=name_;
id=id_;
age=age_;
gender=gender_;
}

void CStudent::SetName(string name)
{
this->name = name;
}

string CStudent::GetName()
{
return name;
}

void CStudent::SetId(string id)
{
this->id=id;
}

string CStudent::GetId()
{
return id;
}

class CUndergraduateStudent:public CStudent //本科生类，继承于类CStudent
{
private:
string department; //学生所属的名
public:
void PrintInfo();
void SetInfo(const string &,const string &,int,char,const string &);
};

void CUndergraduateStudent::PrintInfo()
{
CStudent::PrintInfo(); //调用基类的公有PrintInfo函数
cout<<"院系:\t"<<department<<endl<<endl; //访问的是本派生类的成员变量

}

void CUndergraduateStudent::SetInfo(const string & name_,const string & id_,
int age_,char gender_,const string & department_)
{
CStudent::SetInfo(name_,id_,age_,gender_); //调用基类的公有SetInfo函数
department=department_; //访问的是本派生类中的成员变量
}

class CGraduatedStudent:public CStudent //研究生类，继承于类CStudent
{
private:
string department; //学生所属的系名
string advisor; //导师
public:
void PrintInfo();
void SetInfo(const string & name_,const string & id_,int age_,char gender_,
const string & department_,const string &advisor_);
};

void CGraduatedStudent::PrintInfo()
{
CStudent::PrintInfo(); //调用基类的公有PrintInfo函数
cout<<"院系:\t"<<department<<endl; //访问本派生类中的成员变量
cout<<"导师:\t"<<advisor<<endl<<endl; //访问本派生类中的成员变量
}

void CGraduatedStudent::SetInfo(const string & name_,const string & id_,int age_,
char gender_,const string & department_,const string & advisor_)
{
CStudent::SetInfo(name_,id_,age_,gender_);
department=department_;
advisor=advisor_;
}

int main()
{
CStudent s1;
CUndergraduateStudent s2;
CGraduatedStudent s3;
s2.SetInfo("小张","2018-6-2-4",19,'M',"数学系");
s3.SetInfo("小李","M2017-9",23,'F',"计算机学院","孟教授");
s2.PrintInfo();
s3.PrintInfo();
//cout<<s2.name<<endl;
//s2.name="张一"；
cout<<s2.GetName()<<endl;
s2.SetName("张一");
s2.PrintInfo();
cout<<s2.GetName()<<","<<s2.GetId()<<endl;
return 1;
}