C++继承

最新推荐文章于 2025-06-22 13:16:11 发布

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博客围绕C++继承展开，虽暂无具体内容，但可知聚焦于C++这一编程语言的继承特性，继承是C++面向对象编程的重要概念，能实现代码复用等功能。

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Polygon.h：
#pragma once
#include <iostream> 
#include <iomanip>
using namespace std;

class Polygon//多边形
{
public:
	 void setbian(double t);
protected:
	double a;
};
class Square : public Polygon//正方形
{
public:
	double area();
	double perimeter();

};
class Triangle :public Polygon//三角形
{

public:
	double area();
	double perimeter();
};



Polygon.cpp：

#include"Polygon.h"
using namespace std;
void Polygon::setbian(double t) { a = t; };
double Square::perimeter() { cout << "正方形周长：" << " "; return 4 * a; };
double Square::area() { cout << "正方形面积：" << " "; return a*a; };
double Triangle::perimeter() { cout << "三角形周长" << ends; return 3 * a; };
double Triangle::area() { cout << "三角形面积" << ends; return (a*0.433)*(a*0.433); };

PolygonArea.cpp :

#include"Polygon.h";
void PolygonArea()
{
	Polygon *po;
	Square square;
	po=&square;
	po->setbian(5);
	cout << square.area() << endl;
	cout << square.perimeter() << endl;
	Triangle triangle;
	po = &triangle;
	po->setbian(5);
	cout << triangle.area() << endl;
	cout << triangle.perimeter() << endl;
}