bx19刘嘉琦实验4继承与派生.docxVIP

bx19刘嘉琦实验4继承与派生

.

实实实承派生 与4

班实学号姓名嘉琦刘成实BX120109一、实实目的熟实掌握实的实承能实定实和使用实的实承实系1.,

掌握派生实的明实实办法声与2.

掌握实造函的初始化列表作用域分辨率的使用办法构数与3.理解基实在解二实性实实中的作用虚决4..

二、实实容内

,定实一基实有姓名、性实、年实～再由基实派生出实实和生实～实实增加工

、实和工个教学教号称1

实～生实增加、班实、实实和入成实。学学号学

,明一哺乳实物声个实～再由此派生出狗实～明一声个实的实象～实察2MammalDogDog

基实派生实的造函析函的实用实序。与构数与构数

,定实一种实～派生出矩形实和实实～实算各派生实实象的面实。3PointRectangleCircleArea()

,实实一实实个和一子实个桌～实实一实实实另个桌～是前实派生它从两个4circletableroundtable

的～规定实出一实的高度、面实和实色等实据。个桌数

,定实一大生实个学～函私有据成实,姓名、、校名～实定实实的数数学号并它参数构5student

造函～实缺省实的造函和实出据成实实的数参数构数数公有成实函～定实究生实～数另研它print()以公有实承方式派生于实～新增加“究方向、实实名”私有据成实～定实实研两个数并参数student

的造函和实出究生据的构数研数公有成实函。在数函中定实基实和派生实实象

～实实实数print()main()行实实。三、实实源程序、实实实实与

#includeiostream#includestringusingnamespacestd;

classPeople

{

protected:

stringname;charsex;intage;public:

People(stringname=null,chars=F,intn=0):name(name),sex(s),age(n){}

voidshow()

{

.

.

coutname:nameendl;coutsex:sexendl;coutage:ageendl;

}

};

classStudent:publicPeople{private:

intnum;

intclasses;stringmajor;intscore;public:

Student(stringname,chars,intn,intnum=0,intclasses=0,stringmajor=null,int

score=0):People(name,s,n),num(num),classes(classes),major(major),score(score){}

voidshow1();

};

classTeacher:publicPeople{private:

intnum;stringgrade;intsalary;public:

Teacher(stringname,chars,intn,intnum=0,stringgrade=null,intsalary=0):People(name,s,n),num(num),grade(grade),salary(salary){}voidshow2();

};

voidStudent::show1()

{

show();coutnum:numendl;coutclass:classesendl;coutmajor:majorendl;coutscore:scoreendl;}

.

.voidTeacher::show2(){show();coutnum:numendl;coutgrade:gradeendl;coutsalary:salaryendl;

}

voidmain()

{

刘嘉琦实算机Studenta(,F,20,1009,1201,,95);a.show1();

刘少中实Teacherb(,M,55,1230,,3761);b.show2();

}

程序实实实果,

#includeiostreamusingnamespacestd;classMammal

{

public:

Mammal()

{

coutConstructingclassMammalendl;

}

~Mammal()

{

coutDestructingclassMammalendl;

}

.

.};

classDog:publicMammal{public:

Dog()

{

coutConstructingclassDogendl;

}

~Dog()

{coutDestructing