//?area.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“
#include?“math.h“
#include?“iostream.h“
#include?“string.h“

const?double?PI?=?3.1415926;

class?Shape?{
protected:
	char?name[30];
public:
	Shape（）{strcpy（name“Shape“）;}
	char?*?getName（）?{//獲得圖形的名稱
????????return?name;
????}
public:
	virtual?double?getArea（）?=?0;//獲得圖形的面積
};

class?Circle?:public?Shape?{
private:
	double?m_radius;
public:
	Circle（double?radius）?{//獲得圓形的半徑
		strcpy（name“Circle“）;
????????m_radius?=?radius;
????}
????double?getArea（）?{//計算圓形的面積
????????return?PI?*?pow（m_radius?2）;
????}
};

class?Rectangle?:public?Shape?{
private:
	double?m_length;
????double?m_width;
public:
	Rectangle（double?length?double?width）?{//獲得矩形的長和寬
????????m_length?=?length;
????????m_width?=?width;
		strcpy（name“Rectangle“）;
????}
????double?getArea（）?{//計算矩形的面積
????????return?m_length?*?m_width;
????}
};


int?main（int?argc?char*?argv[]）
{
	C

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1399??2010-10-14?10:43??area\area.cpp
?????文件????????4512??2010-10-14?10:26??area\area.dsp
?????文件?????????533??2010-10-14?10:26??area\area.dsw
?????文件?????????291??2010-10-14?10:26??area\StdAfx.cpp
?????文件?????????769??2010-10-14?10:26??area\StdAfx.h