c++编程题

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1、4.1测试一个名为rectangle的矩形类，其属性为矩形的左下角与右上角两个点的坐标，能计算矩形的面积。解：源程序：#includeclassRectangle{public:Rectangle(inttop,intleft,intbottom,intright);~Rectangle(){}intGetTop()const{returnitsTop;}intGetLeft()const{returnitsLeft;}intGetBottom()const{returnitsBottom;}i

2、ntGetRight()const{returnitsRight;}voidSetTop(inttop){itsTop=top;}voidSetLeft(intleft){itsLeft=left;}voidSetBottom(intbottom){itsBottom=bottom;}voidSetRight(intright){itsRight=right;}intGetArea()const;private:intitsTop;intitsLeft;intitsBottom;intitsRight;};Rectan

3、gle::Rectangle(inttop,intleft,intbottom,intright){itsTop=top;itsLeft=left;itsBottom=bottom;itsRight=right;}intRectangle::GetArea()const{intWidth=itsRight-itsLeft;intHeight=itsTop-itsBottom;return(Width*Height);}intmain(){RectangleMyRectangle(100,20,50,80);intAre

4、a=MyRectangle.GetArea();cout<<"Area:"<using namespace std;   class Box  {public:  float L; float getBMJ(){return L*L*6;}  float getTJ(){return 

5、L*L;}  Box(float in){L=in;}  };    void main()  {    Box r(10);   cout<<"边长：10表面积："<

6、#includeclassvehicle  //汽车类，包含车轮数和车重{ public:  vehicle(int,float);  intget_wheels();  floatget_weight();  voidshow(); protected:  intwheels;    //车轮数  floatweight;   //车重量，单位吨};classcar:privatevehicle  //小车类是汽车类的私有派生类，包含载客数{ public:  car(i

7、ntwheels,floatweight,intpassengers);  intget_passengers();  voidshow(); private:  intpassenger_load;  //额定载客数};classtruck:privatevehicle  //卡车类是汽车类的私有派生类，包含载人数和载重量{ public:  truck(intwheels,floatweight,intpassengers,floatmax_load);  intget_passengers();  voidsho

8、w(); private:  intpassenger_load;  //额定载人数  floatpayload;   //额定载重量，单位吨};vehicle::vehicle(intwl,floatwt){ wheels=wl; weight=wt;}intvehicle::get_wheels(){ returnwheels