C++爱好者 - 网友留言

以下是一段程序,location类是描述屏幕上一个点的位置,成员函数distance(location&)是计算两个点的距离．
//location.h
#if defined(location_h)
#define location_h
class location {
    private:
       int x,y;
    public:
      location(int,int)
      int getx(){return x;}
      int gety(){return y;}
      int distance(location&);
      ~location();  
};
#endif

//location.cpp
#include
location :: location(int m,int n)
{
  cout<<"Initializing"<<""<  x=m;
  y=n;
}
int location :: distance(location&)
{
 d=sql(abs(x1-x2)*abs(x1-x2)+abs(y1-y2)*abs(y1-y2))
}
location :: ~location()
{
 cout<<"Destructor for location"<}
void main()
{
 location A(-10,20);
 location B(-40,60);
}

我的distance(location&)这个成员函数一定有问题,但我实在不知怎么改.请大家多多指教.

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