c++ 私有继承
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2022-03-01 14:54:02
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#include<iostream>
using namespace std;
class Point{
public:
void initPoint(float x = 0,float y = 0){
this->x = x;
this->y = y;
}
void move(float offx,float offy){
x += offx;
y += offy;
}
float getx() const{ return x;}
float gety() const{ return y;}
private:
float x,y;
};
class Rectangle:private Point{//Point 的move函数继承到矩形变成私有函数
public:
void initRectangle(float x,float y,float w,float h){
initPoint(x,y);//调用父类共有成员函数
this->w = w;
this->h = h;
}
void move(float offx,float offy){
Point::move(offx,offy);//通过父类类名加作用域分辨符调用点类的move函数
}
float getx() const{ return Point::getx();}
float gety() const{ return Point::gety();}
float geth() const{ return h;}
float getw() const{ return w;}
private:
float w,h;
};
int main (){
Rectangle rect;//定义Rectangle类的对象
rect.initRectangle(2,3,20,10);
rect.move(3,2);
cout<<"the data of rect(x,y,w,h)"<<endl;
cout <<rect.getx()<<','<<rect.gety()<<','<<rect.getw()<<','<<rect.geth()<<endl;
return 0;
}