C++继承与派生——(5)继承中的构造函数及其调用顺序

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继承中的构造函数及其调用顺序示例：

#pragma once
#include <iostream>
using namespace std;
enum CRL
{
	BLACK,WHITE,GREEN,YELLOW,BROWN,RED,ORANGE
};
class Shape
{
private:
	CRL color;
	int Pos_x, Pos_y;
public:
	Shape(int px=0, int py=0, CRL cor=BLACK) {
		Pos_x = px;
		Pos_y = py;
		color = cor;
		cout << "Construct Shape " << endl;
	}
	int Get_x() {
		return Pos_x;
	}
	int Get_y() {
		return Pos_y;
	}
	double GetArea() {
		return 0;
	}
	double GetPerimeter() {
		return 0;
	}
	CRL GetColor() {
		return color;
	}
};

#pragma once
#include"Shape.h"
class Rectangle:public Shape
{
private:
	int w;
	int h;
public:
	Rectangle(int px , int py , int pw , int ph , CRL cor= BLACK):Shape(px,py,cor) {
		w = pw;
		h = ph;
		cout << "Construct Rectangle" << endl;
	}
	Rectangle(int pw , int ph ) {
		w = pw;
		h = ph;
		cout << "Construct Rectangle" << endl;
	}
	int GetWidth() {
		return w;
	}
	int GetHeight(){
		return h;
	}
	double GetArea() {
		return w * h;
	}
	double GetPerimeter() {
		return 2 * (w + h);
	}
};

#include"Rectangle.h"
#include<string>
int main() {
	CRL color[7] = { BLACK,WHITE,GREEN,YELLOW,BROWN,RED,ORANGE };
	Rectangle r1(3, 4);
	cout << "矩形1的信息: " << endl;
	cout << "矩形1的位置：(" << r1.Get_x() << "," << r1.Get_y() << ")" << endl;
	cout << "矩形1的面积：" << r1.GetArea() << endl;
	cout << "矩形1的周长：" << r1.GetPerimeter() << endl;
	cout << "矩形1的颜色：" << color[static_cast<int>(r1.GetColor())] << endl;
	Rectangle r2(15, 15, 8, 10, RED);
	cout << "矩形2的信息: " << endl;
	cout << "矩形2的位置：(" << r2.Get_x() << "," << r2.Get_y() << ")" << endl;
	cout << "矩形2的面积：" << r2.GetArea() << endl;
	cout << "矩形2的周长：" << r2.GetPerimeter() << endl;
	cout << "矩形2的颜色：" << color[static_cast<int>(r2.GetColor())] << endl;
	return 0;
}

????????以上就是我对C++继承与派生——(5)继承中的构造函数及其调用顺序的理解，希望本篇文章对你有所帮助，也希望可以支持支持博主，后续博主也会定期更新学习记录，记录学习过程中的点点滴滴。如果有不懂和发现问题的小伙伴，请在评论区说出来哦，同时我还会继续更新对C++继承与派生的理解，请持续关注我哦！！！?