C程序设计教程 第一版 龚沛曾 杨志强 著 高等教育出版社 课后答案 第八章 面向对象程序设计基础 课后答

1、 第八章 面相对象程序设计基础、选择题-4CACC 5AC6-0DBDCB -5AABDD二、阅读程序，写出运行结果、conlcalled.concalled. mcon3called.a=0,b=0a=0,b=0 oa=0,b=0、 c0 5 5 网 5 .3 5 案4 5 w3、 答4 后5 a6 课4、 d0,06,6 h7,95、 kx=0x=0x=7 .三、编程题w、#include<iostream.h>classCatprivate: intage; doubleweight; charcolor;public: voidset(inta,doublew,charc)

2、 age=a;weight=w;color=c; intgetage() returnage; doublegetweight() returnweight; chargetcolor() returncolor; voidprint() cout<<"age="<<age<<",weight="<<weight<<",color="<<color<<endl; m;voidmain() o Cata,b; a.set(4,7.8,'r'

3、;); c b.set(,.0,'y'); cout<<"age="<<a.getage()<<endl; cout<<"weight="<<a.getweight()<<endl; 网 cout<<"color="<<a.getcolor()<<endl; . b.print(); 案 答 w 后 a、#include"iostream.h" 课#lianscsludeys"tsr

4、tdigo.h" d chars【00】; hpublic: voidini()>>s; k voidout() puts(s); . intlen() char*p=s; while(*p!='0') wp+; return(p-s); friendMystringstrcat(Mystrings,Mystrings); Mystringstrcat(Mystrings,Mystrings) char*p=s.s,*q=s.s; while(*p!='0') p+; while(*q!='0') *p=*q; p+; q+

5、; m *p='0' returns; ovoidmain() c Mystringp,p,p3; p.in();p.in(); 网 p.out();p.out(); . cout<<"p长度为"<<p.len()<<endl; 案 cout<<"p长度为"<<p.len()<<endl; w p3=strcat(p,p); p3.out(); 后 cout<<"连接以后地长度为"<<p3.len()<<endl

6、; a 课 d3、#include"iostream.h"classPoint hprivateo:ublex,y; kpublic: Point(doublea,doubleb) x=a;y=b; doublegetx() returnx; doublegety() wreturny; voidmove(doublei,doublej) x+=i;y+=j; ;classCircle:privatePointprivate: doubler;public: Circle(doublea,doubleb,doublet):Point(a,b) r=t; doublegetr

7、() returnr; doublef() return(Point:getx(); doublef() m return(Point:gety(); doublearea() return3.459*r*r; o; cvoidmain() PointA(,); CircleB(,3,); 网 cout<<"PointAis("<<A.getx()<<','<<A.gety()<<")."<<endl; . A.move(3,); 案 cout<<&quo

8、t;PointAis("<<A.getx()<<','<<A.gety()<<")."<<endl; w cout<<"圆心:("<<B.f()<<','<<B.f()<<"), 半径r="<<B.getr()<<endl; cout<<"Theareais"<<B.area()<<endl; a

9、 课 d4、#include"iostream.h" hclasspointprivate:X,Y; k public: point(intx=0,inty=0) X=x; Y=y; voidprint() wcout<<"点地坐标：("<<X<<','<<Y<<')'<<endl; friendpointoperator+(point&a,point&b); ;pointoperator+(point&a,point&

10、b) returnpoint(a.X+b.X,a.Y+b.Y); voidmain() pointp(3,4),p(6,8),p3; p.print(); p.print(); p3=p+p; p3.print(); m5、#include"iostream.h" oclassteacher private: c inthour; public: teacher(inth=0) 网 hour=h; . intgeth() 案 w returnhour; 答 后 a voidprint() 课 cout<<"课时数是："<<hour

11、<<"小时"<<endl; virtualintwages() h return(0); ; k classprofessor:publicteacher public: professor(inth):teacher(h) w voidprint() w cout<<"基本工资是："<<3000<<"元"<<endl; cout<<"课时津贴为："<<40<<"元/小时"<<

12、endl;w teacher:print(); virtualintwages() intw=geth(); return(3000+40*w); ;classassociateprofessor:publicteacherpublic: associateprofessor(inth):teacher(h) voidprint() m cout<<"基本工资是："<<500<<"元"<<endl; cout<<"课时津贴为："<<5<<"元

13、/小时"<<endl; teacher:print(); o virtualintwages() c intw=geth(); return(3000+40*w); 网; .classlecturer:publicteacher 案public: 答 w lecturer(inth):teacher(h) 后 voidprint() a 课 cout<<"基本工资是："<<000<<"元"<<endl; cout<<"课时津贴为："<<5<<"元/小时"<<endl; teacher:print(); h virtuailint=wgaegtes() k return(3000+40*w); .;voidmain() w teacher*p; professora(40); associateprofessorb(50); lecturerc(60); p=&a; p->print(); cout<<"该教授地工资是："<<p->wages()<<en