Question

c++类的继承与派生的小问题！！斜杠注释行问什么有了会报错！

#include "stdafx.h"
#include <iostream>
using namespace std;
const double PI=3.14159;

class shape
{
protected:
int sidevalue1,sidevalue2,high;
public:
void setvalue(int x,int y=0,int h=0)
{
sidevalue1=x;
sidevalue2=y;
high=h;
}
virtual void CalculateArea()=0;
};

class Rectangle:public shape
{
public:
void CalculateArea()
{
cout<<"Area of rectangle:"<<sidevalue1*sidevalue2<<endl;
}
};

class Circle:public shape
{
public:
void CaculateArea()
{
cout<<"Area of circle:"<<PI*sidevalue1*sidevalue2<<endl;
}
};

void main()
{
shape* pointer[2];
//Circle C;
Rectangle r;
//pointer[0]=&C;
//pointer[0]->setvalue(30);
//pointer[0]->CalculateArea();
pointer[1]=&r;
pointer[1]->setvalue(250,180);
pointer[1]->CalculateArea();
}

Answer 1

答案是45000？没显示编译错误呀~

补充
应该把
virtual void CalculateArea()=0;（纯虚函数）
改为
virtual void CalculateArea(){};（动态绑定函数）

又及……我错了……仔细看发现你打字错了Orz...上句作废……
void CaculateArea()
改成
void CalculateArea()