c++面向对象实例题集锦

C++面向对象实例：C++面向对象类的实例题目二题目描述：编写一个程序，设计一个产品类Product,其定义如下：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?class

Product

{

public:

Product(char

*n,int

p,int

q);

//构造函数

~Product();

//析构函数

void

buy(int

money);

//购买产品

void

get()

const;

//显示剩余产品数量

private:

char

*

name;

//产品名称

int

price;

//产品单价

int

quantity;

//剩余产品数量

};

并用数据进行测试。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<<"数量不够"<<endl;

}

else

{

quantity

-=

n;

cout<<"名称："<<name<<",单价："<<price<<"元"<<endl;

cout<<"顾客使用"<<money<<"元，购买"<<n<<"台，剩余"<<r<<"元"<<endl;

}

}

void

Product::get()const

{

cout<<"产品："<<name<<",单价："<<price<<",剩余："<<quantity<<"台"<<endl;

}

int

main()

{

Product

p("Iphone6",100,20);

p.buy(10);

p.get();

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

p.buy(1000);

p.get();

return

0;

}

输出：C++面向对象类的实例题目三编写一个程序，设计一个满足如下要求的CData类。（1）用下面的格式输出日期：日/月/年（2）输出在当前日期上加一天后的日期（3）设置日期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))//闰年的情况

{

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

else

{

month++;

if(month>12)

{

year++;

month

=

1;

}

day

=

1;

}

}

else

//平年的情况

{

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;

}

结果输出：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?31/12/2013

1/1/2014

11/11/2014

12/11/2014

C++面向对象类的实例题目四题目描述：以面向对象的概念设计一个类，此类包含3个私有数据：unlead、lead（无铅汽油和有铅汽油）以及total（当天总收入，无铅汽油的价格是17元/升，有铅汽油的加个是16元/升），请以构造函数方式建立此值。试输入某天所加的汽油量，本程序将列出加油当天的总收入。程序代码：[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<<"无铅汽油的价格为17元/升,有铅汽油的价格为16元/升"<<endl;

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

}

void

getdata()

{

cout<<"请输入当天无铅汽油的总量：";

cin>>unlead;

cout<<"请输入当天有铅汽油的总量：";

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;

}

程序输出：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?请输入当天无铅汽油的总量：10

请输入当天有铅汽油的总量：20

无铅汽油的价格为17元/升,有铅汽油的价格为16元/升

total:490

C++面向对象类的实例题目五题目描述：编写一个程序，采用一个类求n!，并输出5!的值。程序代码：[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;

}

程序输出：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?5!

=

120

C++面向对象类的实例题目六问题描述：编写一个程序计算两个给定长方形的面积，其中在设计类成员函数addarea()（用于计算两个长方形的总面积）时使用对象作为参数。程序代码：[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;

}

结果输出：[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++面向对象类的实例题目七题目描述：编写两个有意义的类，使一个类嵌套在另一个类中。分析：本题涉及两个类student和cdegree，前者为学生类，包含学生的学号(nubner)，姓名（name）和成绩(degree)，而成绩degree是类cdegree的对象。cdegree类有3个数据成员，分别为数学(math)，英语(english)和物理(phy)分数。程序代码：[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<<"=========分割线======="<<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;

}

结果输出：[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

=========分割线=======

Number:007

Name:qianshou

Math89

English:99

Physics:100

C++面向对象类的实例题目八题目描述：编写一个程序输入3个学生的英语和计算机成绩，并按照总分从高到低排序。要求设计一个学生类Student，其定义如下：程序代码：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

using

namespace

std;

class

Student

{

public:

void

getscore();

//获取一个学生成绩

void

display();

//显示一个学生成绩

void

sort(

Student

*);

//将若干个学生按总分从高到低排序

private:

int

english;

int

computer;

int

total;

};

void

Student::getscore()

{

cout<<"请输入该学生的英语成绩：";

cin>>english;

cout<<"请输入该学生的计算机成绩：";

cin>>computer;

total

=

english

+

computer;

}

void

Student::display()

{

cout<<"该学生的英语成绩为："<<english<<",计算机成绩为："<<computer<<",总分为："<<total<<endl;

}

void

Student::sort(Student

*p)

{

if(p->total

>

total)

//p指向的对象比该对象大的时候，则交换对象的值

{

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<<"排序结果如下："<<endl;

for(int

i

=

0;

i

<

3;

i++)

{

st[i].display();

}

}

输出结果：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?请输入该学生的英语成绩：80

请输入该学生的计算机成绩：90

该学生的英语成绩为：80,计算机成绩为：90,总分为：170

请输入该学生的英语成绩：70

请输入该学生的计算机成绩：60

该学生的英语成绩为：70,计算机成绩为：60,总分为：130

请输入该学生的英语成绩：99

请输入该学生的计算机成绩：87

该学生的英语成绩为：99,计算机成绩为：87,总分为：186

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

排序结果如下：

该学生的英语成绩为：99,计算机成绩为：87,总分为：186

该学生的英语成绩为：80,计算机成绩为：90,总分为：170

该学生的英语成绩为：70,计算机成绩为：60,总分为：130

C++面向对象类的实例题目九题目描述：编写一个学生和老师数据输入和显示程序，学生数据有编号、姓名、班号和成绩，教师数据有编号、姓名、职称和部门。要求将编号、姓名、输入和显示设计成一个类person，并作为学生数据操作类student和教师数据操作类teacher的基类。程序代码：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?#include<iostream>

#include<string>

using

namespace

std;

class

Person

{

public:

void

get()

{

cout<<"请输入编号：";

cin>>number;

cout<<"请输入姓名：";

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<<"请输入班级编号：";

cin>>class_number;

cout<<"请输入成绩：";

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<<"请输入职称：";

cin>>title;

cout<<"请输入部门：";

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<<"输入一个学生数据："<<endl;

s1.get();

cout<<"输出一个学生数据："<<endl;

s1.show();

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

cout<<"输入一个老师数据："<<endl;

t1.get();

cout<<"输出一个老师数据："<<endl;

t1.show();

return

0;

}

结果输出：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?输入一个学生数据：

请输入编号：001

请输入姓名：qianshou

请输入班级编号：003

请输入成绩：87.5

输出一个学生数据：

NO.001

name:qianshou

class_number:003

grade:87.5

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

输入一个老师数据：

请输入编号：007

请输入姓名：kkx

请输入职称：professor

请输入部门：seventh

输出一个老师数据：

NO.007

name:kkx

title:professor

department:seventh

C++面向对象类的实例题目十题目描述：编写一个程序，其中有一个汽车类vehicle，它具有一个需要传递参数的构造函数，类中的数据成员：车轮个数wheels和车重weight放在保护段中；小车类car是它的私有派生类，其中包含载人数passager_load；卡车类truck是vehicle的私有派生类，其中包含载人数passager_load和载重量payload。每个类都用相关数据的输出方法。程序代码：[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;

}

结果输出：[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++面向对象类的实例题目十一题目描述：写一个程序计算三角形，正方形和圆形3种图形的面积程序代码：[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()

//定义一个求面积的成员函数

{

return

0;

}

virtual

void

ShapeName()

=

0;//定义一个纯虚函数

};

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;

}

结果输出：[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?Triangle:

Area:6

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

Square:

Area:6.25

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

Square:

Area:19.6344

C++面向对象类的实例题目十二题目描述：写一个程序计算正方体、球体和圆柱体的表面积和体积程序代码：[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;

}

结果输出：[cpp]HYPERLINK"/zhez