05.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include<iostream.h>          
#include<string>

class Student
{
public:
	Student(char* pName="no name")
	{
		strcpy(name,pName);
	}
	virtual void display()
	{
		cout<<"name= \""<<name<<"\""<<endl;
	}
protected:
	char name[40];

};
class GraduateStudent: public Student
{
public:
	GraduateStudent( char* pName="no name",double qGrade=90):Student(pName)
	{
		qualifierGrade=qGrade;
	}
	virtual void display()
	{
		cout<<"name= \""<<name<<"\""<<endl
			<<"qualifierGrade="<<qualifierGrade<<endl;
	}
protected:
	int qualifierGrade;
};
void fn(Student& x)
{
	x.display();
}
void main()
{
	Student ds("Lo lee Undergrad");
	GraduateStudent gs;
	fn(ds);
	fn(gs);
}