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C++面向?qū)ο髮嵗篊++面向?qū)ο箢惖膶嵗}目二題目描述:編寫一個程序,設(shè)計一個產(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
int
quantity;
//剩余產(chǎn)品數(shù)量
};
并用數(shù)據(jù)進行測試。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:"<<price<<"元"<<endl;
cout<<"顧客使用"<<money<<"元,購買"<<n<<"臺,剩余"<<r<<"元"<<endl;
}
}
void
Product::get()const
{
cout<<"產(chǎn)品:"<<name<<",單價:"<<price<<",剩余:"<<quantity<<"臺"<<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箢惖膶嵗}目三編寫一個程序,設(shè)計一個滿足如下要求的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箢惖膶嵗}目四題目描述:以面向?qū)ο蟮母拍钤O(shè)計一個類,此類包含3個私有數(shù)據(jù):unlead、lead(無鉛汽油和有鉛汽油)以及total(當(dāng)天總收入,無鉛汽油的價格是17元/升,有鉛汽油的加個是16元/升),請以構(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<<"無鉛汽油的價格為17元/升,有鉛汽油的價格為16元/升"<<endl;
cout<<"total:"<<total<<endl;
}
void
getdata()
{
cout<<"請輸入當(dāng)天無鉛汽油的總量:";
cin>>unlead;
cout<<"請輸入當(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"?"?請輸入當(dāng)天無鉛汽油的總量:10
請輸入當(dāng)天有鉛汽油的總量:20
無鉛汽油的價格為17元/升,有鉛汽油的價格為16元/升
total:490
C++面向?qū)ο箢惖膶嵗}目五題目描述:編寫一個程序,采用一個類求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箢惖膶嵗}目六問題描述:編寫一個程序計算兩個給定長方形的面積,其中在設(shè)計類成員函數(shù)addarea()(用于計算兩個長方形的總面積)時使用對象作為參數(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箢惖膶嵗}目七題目描述:編寫兩個有意義的類,使一個類嵌套在另一個類中。分析:本題涉及兩個類student和cdegree,前者為學(xué)生類,包含學(xué)生的學(xué)號(nubner),姓名(name)和成績(degree),而成績degree是類cdegree的對象。cdegree類有3個數(shù)據(jù)成員,分別為數(shù)學(xué)(math),英語(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箢惖膶嵗}目八題目描述:編寫一個程序輸入3個學(xué)生的英語和計算機成績,并按照總分從高到低排序。要求設(shè)計一個學(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();
//獲取一個學(xué)生成績
void
display();
//顯示一個學(xué)生成績
void
sort(
Student
*);
//將若干個學(xué)生按總分從高到低排序
private:
int
english;
int
computer;
int
total;
};
void
Student::getscore()
{
cout<<"請輸入該學(xué)生的英語成績:";
cin>>english;
cout<<"請輸入該學(xué)生的計算機成績:";
cin>>computer;
total
=
english
+
computer;
}
void
Student::display()
{
cout<<"該學(xué)生的英語成績?yōu)椋?<<english<<",計算機成績?yōu)椋?<<computer<<",總分為:"<<total<<endl;
}
void
Student::sort(Student
*p)
{
if(p->total
>
total)
//p指向的對象比該對象大的時候,則交換對象的值
{
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"?"?請輸入該學(xué)生的英語成績:80
請輸入該學(xué)生的計算機成績:90
該學(xué)生的英語成績?yōu)椋?0,計算機成績?yōu)椋?0,總分為:170
請輸入該學(xué)生的英語成績:70
請輸入該學(xué)生的計算機成績:60
該學(xué)生的英語成績?yōu)椋?0,計算機成績?yōu)椋?0,總分為:130
請輸入該學(xué)生的英語成績:99
請輸入該學(xué)生的計算機成績:87
該學(xué)生的英語成績?yōu)椋?9,計算機成績?yōu)椋?7,總分為:186
======================
排序結(jié)果如下:
該學(xué)生的英語成績?yōu)椋?9,計算機成績?yōu)椋?7,總分為:186
該學(xué)生的英語成績?yōu)椋?0,計算機成績?yōu)椋?0,總分為:170
該學(xué)生的英語成績?yōu)椋?0,計算機成績?yōu)椋?0,總分為:130
C++面向?qū)ο箢惖膶嵗}目九題目描述:編寫一個學(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、姓名、班號和成績,教師數(shù)據(jù)有編號、姓名、職稱和部門。要求將編號、姓名、輸入和顯示設(shè)計成一個類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<<"請輸入編號:";
cin>>number;
cout<<"請輸入姓名:";
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<<"請輸入班級編號:";
cin>>class_number;
cout<<"請輸入成績:";
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<<"請輸入職稱:";
cin>>title;
cout<<"請輸入部門:";
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<<"輸入一個學(xué)生數(shù)據(jù):"<<endl;
s1.get();
cout<<"輸出一個學(xué)生數(shù)據(jù):"<<endl;
s1.show();
cout<<"==========================="<<endl;
cout<<"輸入一個老師數(shù)據(jù):"<<endl;
t1.get();
cout<<"輸出一個老師數(shù)據(jù):"<<endl;
t1.show();
return
0;
}
結(jié)果輸出:[cpp]\o"viewplain"viewplain\o"copy"copy\o"print"print\o"?"?輸入一個學(xué)生數(shù)據(jù):
請輸入編號:001
請輸入姓名:qianshou
請輸入班級編號:003
請輸入成績:87.5
輸出一個學(xué)生數(shù)據(jù):
NO.001
name:qianshou
class_number:003
grade:87.5
===========================
輸入一個老師數(shù)據(jù):
請輸入編號:007
請輸入姓名:kkx
請輸入職稱:professor
請輸入部門:seventh
輸出一個老師數(shù)據(jù):
NO.007
name:kkx
title:professor
department:seventh
C++面向?qū)ο箢惖膶嵗}目十題目描述:編寫一個程序,其中有一個汽車類vehicle,它具有一個需要傳遞參數(shù)的構(gòu)造函數(shù),類中的數(shù)據(jù)成員:車輪個數(shù)wheels和車重weight放在保護段中;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箢惖膶嵗}目十一題目描述:寫一個程序計算三角形,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()
//定義一個求面積的成員函數(shù)
{
return
0;
}
virtual
void
ShapeName()
=
0;//定義一個純虛函數(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箢惖膶嵗}目十二題目描述:寫一個程序計算正方體、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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