c++試驗(yàn)3派生類與繼承1

1、實(shí)驗(yàn)三 派生類與繼承、實(shí)驗(yàn)?zāi)康?、學(xué)習(xí)類的繼承，能夠定義和使用類的繼承關(guān)系。2、學(xué)習(xí)派生類的聲明與定義方法。3、掌握類的定義和對(duì)象的聲明。4、熟悉公有派生和私有派生的訪問(wèn)特性。5、掌握派生類構(gòu)造函數(shù)和析構(gòu)函數(shù)的執(zhí)行順序。6、掌握利用訪問(wèn)聲明調(diào)整基類成員在派生類中的訪問(wèn)屬性。 二、試驗(yàn)內(nèi)容1、下面的程序可以輸出 ASCII 字符與所對(duì)應(yīng)的數(shù)字的對(duì)照表。修改下列程 序，使其可以輸出字母a到z (或任意兩個(gè)字符間)與所對(duì)應(yīng)的數(shù)字的對(duì)照表。 class tablepublic:table(int p)i=p;void ascii(void);protected:int i;void table:asc

2、ii(void)int k=1;for (;i<127;i+)cout<<setw(4)<<i<<" "<<(char)i; if(k)%12=0) cout<<"n"k+;cout<<"n"class der_table:public tablepublic:der_table(int p,char *m):table(p)c=m;void print(void);protected:char *c;void der_table:print(void)co

3、ut<<c<<"n"table:ascii();int main()der_table obl(32,"ASCII value-char");obl.print();return 0; 提示：修改后的主程序?yàn)椋?int main()der_table ob('a','z',"ASCII value-char"); ob.print();return 0; 修改后的程序：(藍(lán)色字體為改動(dòng)處) #include<iostream> using namespace std;

4、#include<iomanip>class tablepublic:table(int p) i=p;void ascii(void);protected:int i;void table:ascii(void)int k=1;for (;i<=122;i+)cout<<setw(4)<<i<<" "<<(char)i;if(k)%13=0) cout<<"n"k+;cout<<"n"class der_table:public tablepu

5、blic:der_table(int p,char *m):table(p)c=m;void print(void);protected:char *c;void der_table:print(void)cout<<c<<"n"table:ascii();int main()der_table obl(97,"ASCII value-char") obl.print();return 0;實(shí)現(xiàn)結(jié)果：'C:'Win do ws?y stem J2Cebugl 11 r*x?'卜 口-|j 礦|l適hSCI1

6、 u*Luechar9? a ?6 b ?9 c 10 d 101 e 102 F 103 g 194 h10&i10&j 107 k 10S 1丄09nIIS n 1L1 o 112 p 113 q 114 ” 115 e 11G t 117 u.119u£19w 120 x 121 y122areis anLj key to continue2、已有類Time和Date,要求設(shè)計(jì)一個(gè)派生類Birthtime,它繼承類Time和Date, 并且增加一個(gè)數(shù)據(jù)成員Child name用于表示小孩的名字，同事設(shè)計(jì)主程序顯示一 個(gè)小孩的出生時(shí)間和名字。class Timep

7、ublic:Time(i nt h,i nt m, int s)hours=h;minu tes=m;sec on ds=s;void display。cout«"出生時(shí)間："vvhoursvv"時(shí)"<<mi nu tes<<"分"<<seco ndsvv'秒"<<e ndl;protected:int hours, minu tes,sec on ds;class Datepublic:Date(i nt m,i nt d,i nt y)month=m; d

8、ay=d; year=y;void display()cout«"出生年月："vvyearvv"年"<<month<<"月"<<day<<"日"<<endl;protected:int month,day,year;實(shí)現(xiàn)程序如下 ：#include<iostream>using namespace std;#include<string>class Timepublic:Time(int h,int m, int s)ho

9、urs=h;minutes=m;seconds=s;void display()cout«"出生時(shí)間："vvhoursvv"時(shí)"<<mi nu tes<<"分"<<seco ndsvv'秒 "<<endl;protected:int hours,minutes,seconds;class Datepublic:Date(int mo,int d,int y)month=mo;day=d;year=y;void display()cout«"

10、出生年月："vvyearvv"年"<<month<<"月"<<day<<"日"<<''protected:int month,day,year;class Birthtime:public Time,public Datepublic:Birthtime(int h,int m, int s,int y,int mo,int d,string name):Time(h,m,s),Date(mo,d,y) Childname=name;void dis

11、play()cout«"姓名："Childname«''private：string Childname;int main()Birthtime peo(11,30,26,1993,12,26,陳珊珊");peo.Birthtime：display();peo.Date：display();peo.Time：display();return 0;實(shí)現(xiàn)結(jié)果：3、編寫一個(gè)學(xué)生和教師的數(shù)據(jù)輸入和顯示程序。學(xué)生數(shù)據(jù)有編號(hào)、姓名、性別、 年齡、系別和成績(jī)，教師數(shù)據(jù)有編號(hào)、姓名、性別、年齡、職稱和部門。要求將 編號(hào)、姓名、性別、年齡的輸入和

12、顯示設(shè)計(jì)成一個(gè)類Person,并作為學(xué)生類Student和教師類Teacher的基類。#in clude<iostream>using n amespace std;#in clude<stri ng>class Pers onpublic:Pers on (i nt nu ,stri ng n a,stri ng se,i nt ag)nu mber=nu;n ame=na;sex=se;age=ag;void display。cout«"編號(hào):"< <nu mber«e ndl;coutv<"姓名:

13、"<<name«endl;coutvv"性另廿:"vvsexvvendl;cout«"年齡:"vvagevve ndl;private:int number;string name;string sex;int age;class Student:public Personpublic:Student(int nu,string na,string se,int ag,string maj,float sco):Person(nu,na,se,ag) major=maj;score=sco;void displa

14、y1()Person:display();cout«"系另 y:"vvmajorvve ndl;cout«"成績(jī):"<<score<<e ndl;private:string major;float score;class Teacher:public Personpublic:Teacher(int nu,string na,string se,int ag,string sit,string dep):Person(nu,na,se,ag) situation=sit; department=dep;voi

15、d display2()Person:display();coutvv"職稱:"vvsituati onvven dl;cout«"部門:"vvdepartment<<endl;private:string situation;string department;int main()Stude nt stu(122591,陳珊珊","女",20,"計(jì)算機(jī)",100);stu.display1();Teacher tea(2012冰 音","女",30,&

16、quot;教授","教務(wù)處");tea.display2();return 0;'LProqrann Ales fx86'MicrcsoftVsljI StudiQryPriojec：5inmDebijgnnm-ex?'匚UHI機(jī) 處 3rits墨r湘W.tocontinue4、給出下面的基類：class areaprotected:double height;double width;public:area(double h,double w)height=h;width=w;virtual double getarea()=0;【要求】

17、(1) 建立基類area的倆個(gè)派生類rectangle與isosceles讓每一個(gè)派生類都 包含一個(gè)函數(shù)getarea(),分別用來(lái)返回矩形與三角形的面積。用構(gòu)造函數(shù)對(duì)height 與width進(jìn)行初始化。(2) 寫出主程序，用來(lái)求height與width分別為10.0與5.0的矩形面積， 以及求height與width分別為4.0與6.0的三角形面積。(3) 要求通過(guò)使用基類指針訪問(wèn)虛函數(shù)的方法(即運(yùn)行時(shí)的多態(tài)性)分別 求出矩形和三角形面積。源代碼：#include<iostream>using namespace std;class areaprotected:double h

18、eight;double width;public:area(double h,double w)height=h;width=w;virtual double getarea()=0;class rectangle:public areapublic:rectangle(double h,double w):area(h,w)double getarea()cout<<" 長(zhǎng) 為 "<<height<<" 寬 為 "<<width<<" 的 矩 形 面 積 為:"v<height*widthv<e ndl;return 0;class isosceles:public areapublic:isosceles(doub