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C++面向?qū)ο髮?shí)例:C++面向?qū)ο箢惖膶?shí)例題目二題目描述:編寫一個(gè)程序,設(shè)計(jì)一個(gè)產(chǎn)品類Product,其定義如下:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?class

Product

{

public:

Product(char

*n,int

p,int

q);

//構(gòu)造函數(shù)

~Product();

//析構(gòu)函數(shù)

void

buy(int

money);

//購(gòu)買產(chǎn)品

void

get()

const;

//顯示剩余產(chǎn)品數(shù)量

private:

char

*

name;

//產(chǎn)品名稱

int

price;

//產(chǎn)品單價(jià)

int

quantity;

//剩余產(chǎn)品數(shù)量

};

并用數(shù)據(jù)進(jìn)行測(cè)試。code:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#include<cstring>

using

namespace

std;

class

Product

{

char

*name;

int

price;

int

quantity;

public:

Product(char

*n,int

p,int

q);

~Product();

void

buy(int

money);

void

get()const;

};

Product::Product(char

*n,int

p,int

q)

{

name

=

n;

price

=

p;

quantity

=

q;

}

Product::~Product()

{

}

void

Product::buy(int

money)

{

int

r,n;

n

=

money/price;

r

=

money%price;

if(n

>

quantity)

{

cout<<"數(shù)量不夠"<<endl;

}

else

{

quantity

-=

n;

cout<<"名稱:"<<name<<",單價(jià):"<<price<<"元"<<endl;

cout<<"顧客使用"<<money<<"元,購(gòu)買"<<n<<"臺(tái),剩余"<<r<<"元"<<endl;

}

}

void

Product::get()const

{

cout<<"產(chǎn)品:"<<name<<",單價(jià):"<<price<<",剩余:"<<quantity<<"臺(tái)"<<endl;

}

int

main()

{

Product

p("Iphone6",100,20);

p.buy(10);

p.get();

cout<<"\n==========================\n"<<endl;

p.buy(1000);

p.get();

return

0;

}

輸出:C++面向?qū)ο箢惖膶?shí)例題目三編寫一個(gè)程序,設(shè)計(jì)一個(gè)滿足如下要求的CData類。(1)用下面的格式輸出日期:日/月/年(2)輸出在當(dāng)前日期上加一天后的日期(3)設(shè)置日期code:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

CData

{

public:

CData(int

y,int

m,int

d);

void

setdate(int

y,

int

m,

int

d);

void

display();

void

add();

private:

int

day;

int

month;

int

year;

};

CData::CData(int

y,int

m,int

d)

{

day

=

d;

month

=

m;

year

=

y;

}

void

CData::setdate(int

y,int

m,int

d)

{

day

=

d;

month

=

m;

year

=

y;

}

void

CData::display()

{

cout<<day<<"/"<<month<<"/"<<year<<endl;

}

void

CData::add()

{

int

a[2][12]={

{31,28,31,30,31,30,31,31,30,31,30,31},

{31,29,31,30,31,30,31,31,30,31,30,31}

};

if((year%400

==

0)||(year%100

!=0

&&

year%4

==0))//閏年的情況

{

if(a[1][month-1]>day)day++;

else

{

month++;

if(month>12)

{

year++;

month

=

1;

}

day

=

1;

}

}

else

//平年的情況

{

if(a[0][month-1]>day)day++;

else

{

month++;

if(month>12)

{

year++;

month

=

1;

}

day

=

1;

}

}

}

int

main()

{

CData

date(2013,12,31);

date.display();

date.add();

date.display();

date.setdate(2014,11,11);

date.display();

date.add();

date.display();

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?31/12/2013

1/1/2014

11/11/2014

12/11/2014

C++面向?qū)ο箢惖膶?shí)例題目四題目描述:以面向?qū)ο蟮母拍钤O(shè)計(jì)一個(gè)類,此類包含3個(gè)私有數(shù)據(jù):unlead、lead(無(wú)鉛汽油和有鉛汽油)以及total(當(dāng)天總收入,無(wú)鉛汽油的價(jià)格是17元/升,有鉛汽油的加個(gè)是16元/升),請(qǐng)以構(gòu)造函數(shù)方式建立此值。試輸入某天所加的汽油量,本程序?qū)⒘谐黾佑彤?dāng)天的總收入。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

Gas

{

public:

Gas(double

ulp,double

lp)

{

unprice

=

ulp;

price

=

lp;

}

void

show()

{

total

=

unlead*unprice

+

lead*price;

cout<<"無(wú)鉛汽油的價(jià)格為17元/升,有鉛汽油的價(jià)格為16元/升"<<endl;

cout<<"total:"<<total<<endl;

}

void

getdata()

{

cout<<"請(qǐng)輸入當(dāng)天無(wú)鉛汽油的總量:";

cin>>unlead;

cout<<"請(qǐng)輸入當(dāng)天有鉛汽油的總量:";

cin>>lead;

}

private:

double

unprice;

double

price;

double

lead;

double

unlead;

double

total;

};

int

main()

{

Gas

g1(17,16);

g1.getdata();

g1.show();

return

0;

}

程序輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?請(qǐng)輸入當(dāng)天無(wú)鉛汽油的總量:10

請(qǐng)輸入當(dāng)天有鉛汽油的總量:20

無(wú)鉛汽油的價(jià)格為17元/升,有鉛汽油的價(jià)格為16元/升

total:490

C++面向?qū)ο箢惖膶?shí)例題目五題目描述:編寫一個(gè)程序,采用一個(gè)類求n!,并輸出5!的值。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

CFactorial

{

public:

CFactorial(int

n)

{

num

=

n;

total

=

1;

}

void

calculate()

{

int

n

=

num;

while(n>0)

{

total

*=

n--;

}

}

void

display()

{

cout<<num<<"!

=

"<<total<<endl;

}

private:

int

num;

long

total;

};

int

main()

{

CFactorial

f(5);

f.calculate();

f.display();

return

0;

}

程序輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?5!

=

120

C++面向?qū)ο箢惖膶?shí)例題目六問(wèn)題描述:編寫一個(gè)程序計(jì)算兩個(gè)給定長(zhǎng)方形的面積,其中在設(shè)計(jì)類成員函數(shù)addarea()(用于計(jì)算兩個(gè)長(zhǎng)方形的總面積)時(shí)使用對(duì)象作為參數(shù)。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

Rectangular

{

public:

Rectangular(double

w,double

l)

{

width

=

w;

length

=

l;

}

double

getc()

{

circumference

=

width

+

length;

return

circumference;

}

double

adddata(Rectangular

&r)

{

return

(circumference

+

r.getc());

}

private:

double

width;

double

length;

double

circumference;

};

int

main()

{

Rectangular

r1(2,3);

cout<<"Circumference

of

r1

="<<r1.getc()<<endl;

Rectangular

r2(3,4);

cout<<"Circumference

of

r2

="<<r2.getc()<<endl;

cout<<"Circumference

of

r1+r2

="<<r1.adddata(r2)<<endl;

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?Circumference

of

r1

=6

Circumference

of

r2

=12

Circumference

of

r1+r2

=18

C++面向?qū)ο箢惖膶?shí)例題目七題目描述:編寫兩個(gè)有意義的類,使一個(gè)類嵌套在另一個(gè)類中。分析:本題涉及兩個(gè)類student和cdegree,前者為學(xué)生類,包含學(xué)生的學(xué)號(hào)(nubner),姓名(name)和成績(jī)(degree),而成績(jī)degree是類cdegree的對(duì)象。cdegree類有3個(gè)數(shù)據(jù)成員,分別為數(shù)學(xué)(math),英語(yǔ)(english)和物理(phy)分?jǐn)?shù)。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#include<string>

using

namespace

std;

class

Student

{

public:

void

getdata();

void

showdata();

private:

string

number;

string

name;

class

Cdegree

{

public:

double

math;

double

english;

double

phy;

}degree;

};

void

Student::getdata()

{

cout<<"Input

number:";

cin>>number;

cout<<"Input

name:";

cin>>name;

cout<<"Input

degree

of

math:";

cin>>degree.math;

cout<<"Input

degree

of

english:";

cin>>degree.english;

cout<<"Input

degree

of

physics:";

cin>>degree.phy;

}

void

Student::showdata()

{

cout<<"=========分割線======="<<endl;

cout<<"Number:"<<number<<endl;

cout<<"Name:"<<name<<endl;

cout<<"Math"<<degree.math<<endl;

cout<<"English:"<<degree.english<<endl;

cout<<"Physics:"<<degree.phy<<endl;

}

int

main()

{

Student

s1;

s1.getdata();

s1.showdata();

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?Input

number:007

Input

name:qianshou

Input

degree

of

math:89

Input

degree

of

english:99

Input

degree

of

physics:100

=========分割線=======

Number:007

Name:qianshou

Math89

English:99

Physics:100

C++面向?qū)ο箢惖膶?shí)例題目八題目描述:編寫一個(gè)程序輸入3個(gè)學(xué)生的英語(yǔ)和計(jì)算機(jī)成績(jī),并按照總分從高到低排序。要求設(shè)計(jì)一個(gè)學(xué)生類Student,其定義如下:程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

Student

{

public:

void

getscore();

//獲取一個(gè)學(xué)生成績(jī)

void

display();

//顯示一個(gè)學(xué)生成績(jī)

void

sort(

Student

*);

//將若干個(gè)學(xué)生按總分從高到低排序

private:

int

english;

int

computer;

int

total;

};

void

Student::getscore()

{

cout<<"請(qǐng)輸入該學(xué)生的英語(yǔ)成績(jī):";

cin>>english;

cout<<"請(qǐng)輸入該學(xué)生的計(jì)算機(jī)成績(jī):";

cin>>computer;

total

=

english

+

computer;

}

void

Student::display()

{

cout<<"該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?<<english<<",計(jì)算機(jī)成績(jī)?yōu)椋?<<computer<<",總分為:"<<total<<endl;

}

void

Student::sort(Student

*p)

{

if(p->total

>

total)

//p指向的對(duì)象比該對(duì)象大的時(shí)候,則交換對(duì)象的值

{

int

t1,t2,t3;

t1

=

p->english;

p->english

=

english;

english

=

t1;

t2

=

p->computer;

p->computer

=

computer;

computer

=

t2;

t3

=

p->total;

p->total

=

total;

total

=

t3;

}

}

int

main()

{

Student

st[3];

for(int

i

=

0;

i

<

3;

i++)

{

st[i].getscore();

st[i].display();

}

st[0].sort(&st[1]);

st[0].sort(&st[2]);

st[1].sort(&st[2]);

cout<<"======================"<<endl;

cout<<"排序結(jié)果如下:"<<endl;

for(int

i

=

0;

i

<

3;

i++)

{

st[i].display();

}

}

輸出結(jié)果:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?請(qǐng)輸入該學(xué)生的英語(yǔ)成績(jī):80

請(qǐng)輸入該學(xué)生的計(jì)算機(jī)成績(jī):90

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?0,計(jì)算機(jī)成績(jī)?yōu)椋?0,總分為:170

請(qǐng)輸入該學(xué)生的英語(yǔ)成績(jī):70

請(qǐng)輸入該學(xué)生的計(jì)算機(jī)成績(jī):60

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?0,計(jì)算機(jī)成績(jī)?yōu)椋?0,總分為:130

請(qǐng)輸入該學(xué)生的英語(yǔ)成績(jī):99

請(qǐng)輸入該學(xué)生的計(jì)算機(jī)成績(jī):87

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?9,計(jì)算機(jī)成績(jī)?yōu)椋?7,總分為:186

======================

排序結(jié)果如下:

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?9,計(jì)算機(jī)成績(jī)?yōu)椋?7,總分為:186

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?0,計(jì)算機(jī)成績(jī)?yōu)椋?0,總分為:170

該學(xué)生的英語(yǔ)成績(jī)?yōu)椋?0,計(jì)算機(jī)成績(jī)?yōu)椋?0,總分為:130

C++面向?qū)ο箢惖膶?shí)例題目九題目描述:編寫一個(gè)學(xué)生和老師數(shù)據(jù)輸入和顯示程序,學(xué)生數(shù)據(jù)有編號(hào)、姓名、班號(hào)和成績(jī),教師數(shù)據(jù)有編號(hào)、姓名、職稱和部門。要求將編號(hào)、姓名、輸入和顯示設(shè)計(jì)成一個(gè)類person,并作為學(xué)生數(shù)據(jù)操作類student和教師數(shù)據(jù)操作類teacher的基類。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#include<string>

using

namespace

std;

class

Person

{

public:

void

get()

{

cout<<"請(qǐng)輸入編號(hào):";

cin>>number;

cout<<"請(qǐng)輸入姓名:";

cin>>name;

}

void

show()

{

cout<<"NO."<<number<<endl;

cout<<"name:"<<name<<endl;

}

private:

string

number;

string

name;

};

class

Student:public

Person

{

public:

void

get()

{

Person::get();

cout<<"請(qǐng)輸入班級(jí)編號(hào):";

cin>>class_number;

cout<<"請(qǐng)輸入成績(jī):";

cin>>grade;

}

void

show()

{

Person::show();

cout<<"class_number:"<<class_number<<endl;

cout<<"grade:"<<grade<<endl;

}

private:

string

class_number;

float

grade;

};

class

Teacher:public

Person

{

public:

void

get()

{

Person::get();

cout<<"請(qǐng)輸入職稱:";

cin>>title;

cout<<"請(qǐng)輸入部門:";

cin>>department;

}

void

show()

{

Person::show();

cout<<"title:"<<title<<endl;

cout<<"department:"<<department<<endl;

}

private:

string

title;

string

department;

};

int

main()

{

Student

s1;

Teacher

t1;

cout<<"輸入一個(gè)學(xué)生數(shù)據(jù):"<<endl;

s1.get();

cout<<"輸出一個(gè)學(xué)生數(shù)據(jù):"<<endl;

s1.show();

cout<<"==========================="<<endl;

cout<<"輸入一個(gè)老師數(shù)據(jù):"<<endl;

t1.get();

cout<<"輸出一個(gè)老師數(shù)據(jù):"<<endl;

t1.show();

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?輸入一個(gè)學(xué)生數(shù)據(jù):

請(qǐng)輸入編號(hào):001

請(qǐng)輸入姓名:qianshou

請(qǐng)輸入班級(jí)編號(hào):003

請(qǐng)輸入成績(jī):87.5

輸出一個(gè)學(xué)生數(shù)據(jù):

NO.001

name:qianshou

class_number:003

grade:87.5

===========================

輸入一個(gè)老師數(shù)據(jù):

請(qǐng)輸入編號(hào):007

請(qǐng)輸入姓名:kkx

請(qǐng)輸入職稱:professor

請(qǐng)輸入部門:seventh

輸出一個(gè)老師數(shù)據(jù):

NO.007

name:kkx

title:professor

department:seventh

C++面向?qū)ο箢惖膶?shí)例題目十題目描述:編寫一個(gè)程序,其中有一個(gè)汽車類vehicle,它具有一個(gè)需要傳遞參數(shù)的構(gòu)造函數(shù),類中的數(shù)據(jù)成員:車輪個(gè)數(shù)wheels和車重weight放在保護(hù)段中;小車類car是它的私有派生類,其中包含載人數(shù)passager_load;卡車類truck是vehicle的私有派生類,其中包含載人數(shù)passager_load和載重量payload。每個(gè)類都用相關(guān)數(shù)據(jù)的輸出方法。程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

Vehicle

{

public:

Vehicle(int

wl,double

wh):wheels(wl),weight(wh){};

void

show()

{

cout<<"wheels:"<<wheels<<",weight:"<<weight<<endl;

}

protected:

int

wheels;

double

weight;

};

class

Car:private

Vehicle

{

public:

Car(int

wl,double

wh,int

pl):Vehicle(wl,wh),passager_load(pl){};

void

show()

{

Vehicle::show();

cout<<"passager_load:"<<passager_load<<endl;

}

private:

int

passager_load;

};

class

Truck:private

Vehicle

{

public:

Truck(int

wl,double

wh,int

pl,double

psl):Vehicle(wl,wh),passager_load(pl),payload(psl){};

void

show()

{

Vehicle::show();

cout<<"passager_load:"<<passager_load<<endl;

cout<<"payload:"<<payload<<endl;

}

private:

int

passager_load;

double

payload;

};

int

main()

{

Vehicle

v1(4,200);

v1.show();

cout<<"===================="<<endl;

Car

c1(4,290,10);

c1.show();

cout<<"===================="<<endl;

Truck

t1(4,500,50,200);

t1.show();

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?wheels:4,weight:200

====================

wheels:4,weight:290

passager_load:10

====================

wheels:4,weight:500

passager_load:50

payload:200

C++面向?qū)ο箢惖膶?shí)例題目十一題目描述:寫一個(gè)程序計(jì)算三角形,正方形和圓形3種圖形的面積程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#include<cmath>

#define

PAI

3.1415

using

namespace

std;

class

Shape

{

public:

virtual

float

area()

//定義一個(gè)求面積的成員函數(shù)

{

return

0;

}

virtual

void

ShapeName()

=

0;//定義一個(gè)純虛函數(shù)

};

class

Triangle:public

Shape

{

public:

Triangle(float

x,float

y,float

z):a(x),b(y),c(z){};

void

ShapeName()

{

cout<<"Triangle:"<<endl;

}

float

area()

{

float

p

=

(a+b+c)/2;

float

s

=

sqrt(p*(p-a)*(p-b)*(p-c));

return

s;

}

private:

float

a,b,c;

};

class

Square:public

Shape

{

public:

Square(float

l):length(l){};

void

ShapeName()

{

cout<<"Square:"<<endl;

}

float

area()

{

float

s

=

length

*

length;

return

s;

}

private:

float

length;

};

class

Circle:public

Shape

{

public:

Circle(float

r):radius(r){};

void

ShapeName()

{

cout<<"Square:"<<endl;

}

float

area()

{

float

s

=

PAI*radius*radius;

return

s;

}

private:

float

radius;

};

int

main()

{

Shape

*pt;

pt

=

new

Triangle(3,4,5);

pt->ShapeName();

cout<<"Area:"<<pt->area()<<endl;

cout<<"================================"<<endl;

pt

=

new

Square(2.5);

pt->ShapeName();

cout<<"Area:"<<pt->area()<<endl;

cout<<"================================"<<endl;

pt

=

new

Circle(2.5);

pt->ShapeName();

cout<<"Area:"<<pt->area()<<endl;

return

0;

}

結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?Triangle:

Area:6

================================

Square:

Area:6.25

================================

Square:

Area:19.6344

C++面向?qū)ο箢惖膶?shí)例題目十二題目描述:寫一個(gè)程序計(jì)算正方體、球體和圓柱體的表面積和體積程序代碼:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#define

PAI

3.1415

using

namespace

std;

class

Shape

{

public:

virtual

void

ShapeName()=0;

virtual

void

area()

{

return

;

}

virtual

void

volume()

{

return

;

}

};

class

Cube:public

Shape

{

public:

Cube(float

len):length(len){};

void

ShapeName()

{

cout<<"Cube:"<<endl;

}

void

area()

{

double

s

=

6*length*length;

cout<<"Area:"<<s<<endl;

}

void

volume()

{

double

v

=

length*length*length;

cout<<"Volume:"<<v<<endl;

}

private:

float

length;

};

class

Sphere:public

Shape

{

public:

Sphere(float

r):radius(r){};

void

ShapeName()

{

cout<<"Sphere:"<<endl;

}

void

area()

{

double

s

=

4*radius*radius*PAI;

cout<<"Area:"<<s<<endl;

}

void

volume()

{

double

v

=

(4*radius*radius*radius*PAI)/3;

cout<<"Volume:"<<v<<endl;

}

private:

float

radius;

};

class

Cylinder:public

Shape

{

public:

Cylinder(float

r,float

h):radius(r),length(h){};

void

ShapeName()

{

cout<<"Cylinder:"<<endl;

}

void

area()

{

double

s

=

radius*radius*PAI

+

2*PAI*radius*length;

cout<<"Area:"<<s<<endl;

}

void

volume()

{

double

v

=

radius*radius*PAI*length;

cout<<"Volume:"<<v<<endl;

}

private:

float

radius;

float

length;

};

int

main()

{

Shape

*

pt;

pt

=

new

Cube(2);

pt->ShapeName();

pt->area();

pt->volume();

cout<<"==========================="<<endl;

pt

=

new

Sphere(2);

pt->ShapeName();

pt->area();

pt->volume();

cout<<"==========================="<<endl;

pt

=

new

Cylinder(2,2);

pt->ShapeName();

pt->area();

pt->volume();

cout<<"==========================="<<endl;

}

結(jié)果輸出:[cpp]HYPERLINK"/zhez

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