3-0-7答.txt

思路很清晰的c++课件。例子很简明

#include <iostream.h>
class Rectangl{
private:
	int Width;
	int Height;
public:
	void Init(int w,int h){ Width=w;Height=h;}
	//Rectangl(int w,int h){ Width=w;Height=h;}
	//Rectangl(int w,int h):Width(w),Height(h){}

	void SetWidth(int w){Width=w;}
	void SetHeight(int h){Height=h;}
	int GetWidth(){return Width;}
	int GetHeight(){return Height;}
	int Area(){return Width*Height;}
	void DispInfo()
	{
		cout<<"Width="<<Width;
		cout<<",Height="<<Height;
		cout<<",Area="<<Width*Height<<endl;
	}
};
void main()
{
	Rectangl a;
	a.Init(10,20);
	//Rectangl a(10,20);
	a.DispInfo();
	a.SetWidth(8);
	a.DispInfo();
	a.SetHeight(2*a.GetHeight());
	a.DispInfo();
}