值得研究的问题..

[「已注销」]

#include <iostream>
using namespace std;
class Student
{
public:
	Student()
{
	No=0;
	Name=" ";
	Sum=0.0;
	Averages=0.0;
}
	~Student(){cout<<"结束统计A类."<<endl;}
	void Get(int,char *,float);
	void Set();
	void Average();
private:
	int No;
	char *Name;
	float Sum;
	float Averages;
	static int Noo;
};
int Student::Noo = 0;
void Student::Get(int x,char *y,float z)
{
	No=x;
	Name=y;
	Sum=z;
	Averages+=Sum;
	Noo++;
}
void Student::Set()
{
	cout<<"学码:"<<No<<"姓名:"<<Name<<"成绩:"<<Sum<<"分 ";
}

void Student::Average()
{
	cout<<"总共有"<<Noo<<"个人的平均分数是:"<<Averages/Noo<<"分.";
}
//////////////////////////////////////////////////////////////////////
class Student2:public Student
{
public:
	Student2():Student()
	{
		Height=Weight=0;
		AverageHeight=AverageWeight=0.0;
	}
	~Student2(){cout<<"结束统计B类."<<endl;}
	void Get(int,char *,float,float,float);
	void Set();
	void Average();
private:
	float Height;
	float Weight;
	float AverageHeight;
	float AverageWeight;
};
void Student2::Get(int x,char *y,float z,float h,float w)
{
	Student::Get(x,y,z);
	Height=h;
	Weight=w;
	AverageHeight+=Height;
	AverageWeight+=Weight;
}
void Student2::Set()
{
	Student::Set();
	cout<<"身高:"<<Height<<"米"<<"体重:"<<Weight<<"斤"<<endl;
}
void Student2::Average()
{
	Student::Average();
	cout<<"平均身高:"<<AverageHeight/Student::Noo<<"平均体重:"<<AverageWeight/Student::Noo<<endl;
}

int main()
{
	Student2 c;
	c.Get(1,"张三",90,1.75,110);
	c.Set();
	c.Get(2,"李四",85,1.70,100);
	c.Set();
	c.Get(3,"王五",80,1.65,95);
	c.Set();
	c.Average();
	return 0;
}

这题目主要出在私有的静态度私有的数据成员static int Noo;这
为什么在VC6.0编译执行通过无错
而在VS2005编译就出现无法访问能?
是不是编译器的区别吖?`

[aurora001]

protected:
static int Noo;

[hznat]

友情支持！

[Qlaiaqu]

Student::Noo被你设置为私有静态成员变量，所以无法访问。你可以设置为public或protected。

[霍大脚]

[Quote=引用 1 楼 aurora001 的回复:]
protected:
static int Noo;
[/Quote]
是啊，私有的能直接加作用域解析访问吗？

[spotatoes]

public

[霍大脚]

把class Student改下，把静态成员改成保护或者公有
class Student
{
public:
    Student()
{
    No=0;
    Name=" ";
    Sum=0.0;
    Averages=0.0;
}
    ~Student(){cout<<"结束统计A类."<<endl;}
    void Get(int,char *,float);
    void Set();
    void Average();
private:
    int No;
    char *Name;
    float Sum;
    float Averages;
protected:
    static int Noo;
};

[longlinghu]

public:
static int Noo;

用protected的话 貌似只有在它的继承类里调用。

[wzfxyer]

虽然说static变量不从属于任何对象，但是作为静态变量，
也不是Student::Noo能访问的。
而且vc6.0对c++的支持那是不用说的。。能有70%就不错了。