[問題] c++ 繼承問題
class Point2D{
public:
Point2D(int,int);
private:
int x,y;
};
class Point3D:public Point2D{
public:
Point3D(int,int,int);
private:
int z;
};
Point3D::Point3D(int a=0,int b=0,int c=0):Point2D(a,b),z(c){
}
與
Point3D::Point3D(int a=0,int b=0,int c=0):z(c){
Point2D(a,b);
}
所產生的結果似乎不太一樣
我想了解一下上下兩種的含意!
thx!
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