第2章习题分析1下面给出的是几对实体按isa hasa具有norel

下面给出的是几对实体。请按“isa（是hasa（具有norelationhasnonohasishashashashasis 析构函 构造函 数据成 类的public成员函数集称为类 对外接 重载，类的析构函 不能 #if!defined_NUMBERCRUNCHER_H_#define_NUMBERCRUNCHER_H_class{doublex;NumberCruncher(double{doubleget();doubletwice();doubletriple();doublesquare();doublecube();#include"numbercruncher.h"#include<iostream>//usingnamespacedoubleNumberCruncher::get(){returnx;//注意缩进}doubleNumberCruncher::twice(){return2*x;//注意缩进}doubleNumberCruncher::triple(){return3*x;//注意缩进}doubleNumberCruncher::square(){returnx*x;//注意缩进}doubleNumberCruncher::cube(){returnx*x*x;//注意缩进}#include//写#include<cstdlib>usingnamespaceint{intNumberCruncherr(a);cout<<"输入的值为"<<r.get()<<",2倍值"<<r.twice()<<",3值"<<r.triple()<<",平方值"<<r.square()<<",立方return0;}#if!defined_COLUMN_H_#define_COLUMN_H_classColumn{doubleheight,radius;Column(doubler=2,doubleh=5);Column(Column&c);doublearea();doublevolume();voidset(doubler,double#include<iostream>#include"column.h"#definePI3.1415usingnamespaceColumn::Column(doubler,doubleh){radius=r;//注意缩进height=h}Column::Column(Column&c){radius=c.radius;//注意缩进height=c.heightdoublereturn}doublereturn}voidColumn::set(doublerdoubleh){radius=r;//注意缩进height=h}#include<iostream>#include"column.h"Columnone(1,1);usingnamespacestd;intmain(){doubleColumn*ptrColumnColumnthree(3,3);//注意缩进ptr=newColumn(4,4);//注意缩进staticColumnfive(5,5)注意缩进Columncout<<"Theareaofthecolumnis"<<t.area()<<endl;cout<<"Thevolumeofthecolumnis"<<t.volume()<<endl;ColumnT(t);cout<<"Theareaofthecolumnis"<<t.area()<<endl;//cout<<"Theheightandradiusis";cout<<"Theareaofthecolumnis"<<t.area()<<endl;cout<<"Thevolumeofthecolumnis"<<t.volume()<<endl;deleteptr;return}fourT局部对象在作用域结束时析构，作用域结束点相同时，先的对象后析构，后的对象delete#include<iostream>#include<cmath>usingnamespaceclassPoint{voidinputPoint(doublea,doubleb);//boolisEndPoint();doublegetX();doublegetY();doublex,voidPoint::inputPoint(doublea,double}boolreturnfalse;elsereturntrue}doublePoint::getX(){returnx;}doublePoint::getY(){returny;}classRectangle{voidboolisContainPoint(Pointp);doubleupperLeftX,upperLeftY;doublelowerRightX,lowerRightY;voidRectangle::inputRectangle(){doublex1,x2,y1,y2;}boolRectangle::isContainPoint(Pointreturntrue;elsereturnfalse;}int{Rectangler[10];Pointp;charinti=0,j=0;doublee,f;{}while(p.isEndPoint()){intfor(int{{cout<<"Point"<<j+1<<"iscontainedinfigure}}cout<<"Point"<<j+1<<"isnotcontainedinany}return}修订版本：Point类提供构造函数、set#include<iostream>#include<cmath>usingnamespacestd;classPoint{Point(doublea,doublevoidsetPoint(doublea,doubleb);boolisEndPoint();doublegetX();doubledoublex,Point::Point(doublea,doubleb){}voidPoint::setPoint(doublea,doubleb){}boolreturnfalse;}

returndoublePoint::getX(){returnx;}doublePoint::getY(){returny;}classRectangle{voidboolisContainPoint(Pointp);doubleupperLeftX,upperLeftY;doublelowerRightX,lowerRightY;voidRectangle::inputRectangle(){}boolRectangle::isContainPoint(Point}

returntrue;returnint{Rectangler[10];charR;inti=0,j=0;double{}Pointwhile{intfor(int{{cout<<"Point"<<j+1<<"iscontainedinfigure"<<k+1<<endl;}}cout<<"Point"<<j+1<<"isnotcontainedinany}return}usingnamespaceclasspoint{voidinputPoint();boolisEndPoint();doublegetX();doublegetY();doublex,voidpoint::inputPoint(){}boolif(fabs(x-9999.9)<1e-6&&fabs(y-9999.9)<1e-6)returnfalse;return}doublepoint::getX(){returnx;}doublepoint::getY(){returny;}classrectangle{voidboolisContainPoint(pointp);doubleupperLeftX,upperLeftY;doublelowerRightX,lowerRightY;voidrectangle::inputRectangle(){}boolrectangle::isContainPoint(pointp){doublex=p.getX();doubleif((x>upperLeftX&&x<lowerRightX)&&(y>lowerRightY&&y<upperLeftY))returntrue;return}int{intfCount=0;//图形个数intpCount=0;//点个数charfigure;//识别图形rectanglerec[10];//一个数组元素代表一个矩形while(