6.cpp

要求了解面向对象技术的历史和现状

#include <iostream.h>
class Student
{
public:
    float grade()
	{
		g=5.5;
		return g;
	}
	float grade(float newGPA)
	{
		g=newGPA;
		return g;
	}
private:
	float g;
};
class Slope
{
public:
	float grade()
	{
		g=0.5;
		return g;
	}
protected:
	float g;
};

char grade(float value)
{
	if(value>=0.5)
		return 'A';
	else
		return 'B';
}

void main()
{
	Student s;
	Slope t;
	s.grade();
    float v=s.grade();
	char c=grade(v);
	float m=t.grade();
}