C++面向?qū)ο蟪绦蛟O(shè)計(jì)上機(jī)考試題庫

C++面對(duì)對(duì)象程序設(shè)計(jì)上機(jī)考試題庫

一、第一類題目(20道，每題7分，在word中保留代碼并將輸出結(jié)果窗口保留)

1.定義盒子Box類，要求具有以下成員：長(zhǎng)、寬、高分別為x,y,z,可設(shè)置盒子形態(tài)；

可計(jì)算盒子體積；可計(jì)算盒子的表面積。

#include<iostream>

classBox

{private:

intx,y,z;intv,s;

public:

voidint(intxl=0,intyl=0,intzl=0){x=xl;y=yl;z=zl;}

voidvolue0{v=x*y*z;}

voidarea(){s=2*(x*y+x*z+y*z);}

voidshow()

{cout?/zx=z/<<x?，zy=/z<<y?z，z='/<<z?endl;

cout<<z，s=v=z，<<v<<endl;

)

)；

voidmainO

{Boxa;

a.init(2,3,4);

a.volue();

a.area();

a.show();

)

2.有兩個(gè)長(zhǎng)方柱，其長(zhǎng)、寬、高分別為：(1)30,20,10；(2)12,10,20。分別求

他們的體積。編一個(gè)基于對(duì)象的程序，在類中用帶參數(shù)的構(gòu)造函數(shù)。

#include<iostream>

usingnamespacestd;

classBox

{public:

Box(int,int,int);〃帶參數(shù)的構(gòu)造函數(shù)

intvolume0;

private:

intlength;

intwidth;

intheight;

)；

Box::Box(intlen,inth,intw)

{length=len;

height=h;

width=w;

)

//Box::Box(intlen,intw,int,h):length(len),height(h),width(w){}

intBox::volume()

{return(length*width*height);}

intmain()

(

Boxboxl(30,20,10);

cout<<，，Thevolumeofboxlis/z<<boxl.volume()?endl;

Boxbox2(12,10,20);

cout<<，，Thevolumeofbox2is/z<<box2.volume()<<endl;

return0;

}

3.有兩個(gè)長(zhǎng)方柱，其長(zhǎng)、寬、高分別為：(1)12,20,25；(2)10,30,20。分別求

他們的體積。編一個(gè)基于對(duì)象的程序，且定義兩個(gè)構(gòu)造函數(shù)，其中一個(gè)有參數(shù)，一個(gè)無

參數(shù)。

^include<iostream>

usingnamespacestd;

classBox

{public:

Box();

Box(intlen,intw,inth):length(len),width(w),height(h){}

intvolume0;

private:

intlength;

intwidth;

intheight;

}；

intBox::volume()

{return(length*width*height);

}

intmain()

(

Boxboxl(10,20,25);

cout?z/Thevolumeofboxlis，，<<boxl.volume0<<endl;

Boxbox2(10,30,20);

cout<<z/Thevolumeofbox2isz，<<box2.volume()<<endl;

return0;

4.聲明一個(gè)類模板，利用它分別實(shí)現(xiàn)兩個(gè)整數(shù)、浮點(diǎn)數(shù)和字符的比較，求出大數(shù)和小

數(shù)。

^include<iostream>

usingnamespacestd;

template<classnumtype>〃聲明一個(gè)類模板

classCompare

{public:

Compare(numtypea,numtypeb)

{x=a;y=b;}

numtypemax()

{return(x>y)?x:y;}

numtypemin()

{return(x<y)?x:y;}

private:

numtypex,y;

);

intmain()

{Compare<int>cmpl(3,7);

cout<<cmpl.max()<<z/istheMaximumoftwointedernumbers.，z?endl;

cout<<cmpl.min0<<，zistheMinimumoftwointeder

numbers.zz<<endl<<endl;

Compare<float>cmp2(45.78,93.6);

cout<<cmp2.max()<<，zistheMaximumoftwofloatnumbers.z，?endl;

cout<<cmp2.min()<<z，istheMinimumoftwofloatnumbers.，，<<endl?endl;

Compare<char>cmp3('a','A');

cout<<cmp3.max()<<z，istheMaximumoftwocharacters./z<<endl;

cout<<cmp3.min()<<z，istheMinimumoftwocharacters.z\<endl;

return0;

5.建立一個(gè)對(duì)象數(shù)組，內(nèi)放5個(gè)學(xué)生的數(shù)據(jù)(學(xué)號(hào)、成果)，用指針指向數(shù)組首元素,

輸出第1,3,5個(gè)學(xué)生的數(shù)據(jù)。初值自擬。

#include<iostream>

usingnamespacestd;

classStudent

{public:

Student(intn,doubles):num(n),score(s){}

voiddisplay();

private:

intnum;

doublescore;

);

voidStudent::display()

{cout<<num<<，/，，?score<<endl;}

intmain()

{Studentstud[5]={

Student(101,78.5),Student(102,85.5),Student(103,98.5),

Student(104,100.0),Student(105,95.5)};

Student*p=stud;

for(inti=0;i<=2;p=p+2,i++)

p->display();

return0;

)

6.建立一個(gè)對(duì)象數(shù)組，內(nèi)放5個(gè)學(xué)生的數(shù)據(jù)(學(xué)號(hào)、成果)，設(shè)立一個(gè)函數(shù)max,用指

向?qū)ο蟮闹羔樧骱瘮?shù)參數(shù)，在max函數(shù)中找出5個(gè)學(xué)生中成果最高者，并輸出其學(xué)號(hào)。

初值自擬。

Sinclude<iostream>

usingnamespacestd;

classStudent

{public:

Student(intn,floats):num(n),score(s){}

intnum;

floatscore;

voidmainO

{Studentstud[5]={

Student(101,78.5),Student(102,85.5),Student(103,98.5),

Student(104,100.0),Student(105,95.5)};

voidmax(Student*);

Student*p=&stud[0];

max(p);

)

voidmax(Student*arr)

{floatmax_score=arr[0].score;

intk=0;

for(inti=l;i<5;i++)

if(arr[i].score>max_score){max_score=arr[i].score;k=i;}

cout<<arr[k].num<<，zz，<<max_score<<endl;

7.用new建立一個(gè)動(dòng)態(tài)一維數(shù)組，并初始化5"10]={1,2,3,4,5,6,7,8,9,10},用指針

輸出，最終銷毀數(shù)組所占空間。

#include<iostream>

#include<string>

usingnamespacestd;

voidmain(){

int*p;

p=newint[10];

for(inti=l;i<=10;i++)

*(p+i-l)=i;

cout〈〈*(p+iT)<<〃〃；

}

cout<<endl;

delete[]p;

return;

)

8.定義一個(gè)復(fù)數(shù)類Complex,重載運(yùn)算符“+”,使之能用于復(fù)數(shù)的加法運(yùn)算。將運(yùn)算

符函數(shù)重載為非成員、非友元的一般函數(shù)。編寫程序，求兩個(gè)復(fù)數(shù)之和。初值自擬。

ttinclude<iostream>

usingnamespacestd;

classComplex

{public:

Complex(){real=0;imag=0;}

Complex(doubler,doublei){real=r;imag=i;}

doubleget_real();

doubleget_imag();

voiddisplay();

private:

doublereal;

doubleimag;

}；

doubleComplex::get_real()

{returnreal;}

doubleComplex::get_imag()

{returnimag;}

voidComplex::display()

{cout<<z，(，，?real?，z,/，<<imag<<，，i)z，<<endl;}

Complexoperator+(Complex&cl,Complex&c2)

(

return

Complex(cl.get_real()+c2?get_real(),cl.get_imag()+c2?get_imag());

)

intmain()

{Complexcl(3,4),c2(5,-10),c3;

c3=cl+c2;

cout〈<〃c3=〃；

c3.display();

return0;

)

9.定義一個(gè)復(fù)數(shù)類Complex,重載運(yùn)算符“+”,“一”，使之能用于復(fù)數(shù)的加，減運(yùn)

算，運(yùn)算符重載函數(shù)作為Complex類的成員函數(shù)。編程序，分別求出兩個(gè)復(fù)數(shù)之和，

差。初值自擬。

usingnamespacestd;

classComplex

{public:

Complex(){real=0;imag=0;}

Complex(doubler,doublei){real=r;imag=i;}

Complexoperator+(Complex&c2);

Complexoperator-(Complex&c2);

voiddisplay();

private:

doublereal;

doubleimag;

}；

ComplexComplex::operator+(Complex&c2)

{Complexc;

c.real=real+c2.real;

c.imag=imag+c2.imag;

returnc;}

ComplexComplex::operator-(Complex&c2)

{Complexc;

c.real=real-c2.real;

c.imag=imag-c2.imag;

returnc;}

voidComplex::display()

{cout<<〃〃<<imag<X〃i)〃<<endl;}

intmain()

{Complexcl(3,4),c2(5,-10),c3;

c3=cl+c2;

cout<<，，cl+c2=//;

c3.display();

c3=cl-c2;

cout<<，，cl-c2=zz;

c3.display();

return0;

)

10.定義一個(gè)復(fù)數(shù)類Complex,重載運(yùn)算符“*”，“/"，使之能用于復(fù)數(shù)的乘，除。

運(yùn)算符重載函數(shù)作為Complex類的成員函數(shù)。編程序，分別求出兩個(gè)復(fù)數(shù)之積和商。初

值自擬。提示：兩復(fù)數(shù)相乘的計(jì)算公式為：(a+bi)*(c+di)=(ac-bd)+(ad+bc)i。兩復(fù)數(shù)

相除的計(jì)算公式為：(a+bi)/(c+di)=(ac+bd)/(c*c+d*d)+(bc-ad)/(c*c+d*d)i。

^include<iostream>

usingnamespacestd;

classComplex

{public:

Complex(){real=0;imag=0;}

Complex(doubler,doublei){real=r;imag=i;}

Complexoperator*(Complex&c2);

Complexoperator/(Complex&c2);

voiddisplay();

private:

doublereal;

doubleimag;

}；

ComplexComplex::operator*(Complex&c2)

{Complexc;

c.real=real*c2.real-imag*c2.imag;

c.imag=imag*c2?real+real*c2.imag;

returnc;}

ComplexComplex::operator/(Complex&c2)

{Complexc;

c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2?imag);

c.imag=:(imag*c2?real-real*c2.imag)/(c2.real*c2?real+c2.imag*c2.imag);

returnc;}

voidComplex::display()

{cout<<，/(，，?real?z，,/，<<imag<<，，i)，z<<endl;}

intmain()

{Complexcl(3,4),c2(5,-10),c3;

c3=cl*c2;

cout<〈〃cl*c2二〃；

c3.display();

c3=cl/c2;

cout?，，cl/c2=，/;

c3.display();

return0;

}

11.定義一個(gè)復(fù)數(shù)類Complex,重載運(yùn)算符“+”，使之能用于復(fù)數(shù)的加法運(yùn)算。參加

運(yùn)算的兩個(gè)運(yùn)算量可以都是類對(duì)象，也可以其中有一個(gè)是整數(shù)，依次隨意。例如：

cl+c2,i+cl,cl+i均合法(設(shè)i為整數(shù)，cl,c2為復(fù)數(shù))。編程序，分別求兩個(gè)復(fù)數(shù)

之和、整數(shù)和復(fù)數(shù)之和。初值自擬。

#include<iostream.h>

classComplex

{public:

Complex(){real=0;imag=0;}

Complex(doubler,doublei){real=r;imag=i;}

Complexoperator+(Complex&c2);

Complexoperator+(int&i);

friendComplexoperator+(int&,Complex&);

voiddisplay();

private:

doublereal;

doubleimag;

)；

ComplexComplex::operator+(Complex&c)

{returnComplex(real+c.real,imag+c.imag);}

ComplexComplex::operator+(int&i)

{returnComplex(real+i,imag);)

voidComplex::display()

{cout?，/(，，<<real?，z,//<<imag<<，，i)z，<<endl;}

Complexoperator+(int&i,Complex&c)

{returnComplex(i+c.real,c.imag);}

intmain()

{Complexcl(3,4),c2(5,-10),c3;

inti=5;

c3=cl+c2;

cout<<，，cl+c2=z，;

c3.display();

c3=i+cl;

cout<<，，i+cl=，z;

c3.display();

c3=cl+i;

cout<<z，cl+i=，z;

c3.display0;

return0;

)

12.有兩個(gè)矩陣a和b,均為2行3歹求兩個(gè)矩陣之和。重載運(yùn)算符“+”，使之能用

于矩陣相加。如c=a+b。初值自擬。

#include<iostream.h>

classMatrix

{public:

Matrix();

friendMatrixoperator+(Matrix&,Matrix&);

voidinput();

voiddisplay();

private:

intmat[2][3];

)；

Matrix::Matrix()

{for(inti=0;i<2;i++)

for(intj=0;j<3;j++)

mat[i][j]=0;

)

Matrixoperator+(Matrix&a,Matrix&b)

{Matrixc;

for(inti=0;i<2;i++)

for(intj=0;j<3;j++)

{c.mat[i][j]=a.mat[i][j]+b.mat[i][j];}

returnc;

)

voidMatrix::input()

{cout<<，zinputvalueofmatrix:"z<<endl;

for(inti=0;i<2;i++)

for(intj=0;j<3;j++)

cin?mat[i]Lj];

)

voidMatrix::display()

{for(inti=0;i<2;i++)

{for(intj=0;j<3;j++)

{cout?mat[i][j]<<z，z，;}

cout?endl;}

)

intmain()

{Matrixa,b,c;

a.input();

b.input();

cout<<endl<<，，Matrixa:，，?endl;

a.display();

cout<<endl<<z，Matrixb:，z?endl;

b.display();

c=a+b;

cout<<endl<<，，Matrixc=Matrixa+Matrixb:〃<<endl;

c.display();

return0;

)

13.將運(yùn)算符“十”重載為適用于復(fù)數(shù)加法，重載函數(shù)不作為成員函數(shù)，而放在類外,

作為Complex類的友元函數(shù)。初值自擬。

#include<iostream.h>

classComplex

{public:

Complex(){real=0;imag=0;}

Complex(doubler){real=r;imag=0;}

Complex(doubler,doublei){real=r;imag=i;}

friendComplexoperator+(Complex&cl,Complex&c2);

voiddisplay0;

private:

doublereal;

doubleimag;

}；

Complexoperator+(Complex&cl,Complex&c2)

(

returnComplex(cl.real+c2.real,cl.imag+c2.imag);

)

voidComplex::display()

{cout<<z，(，，?real?，z,z，?imag<<z，i)zz<<endl;}

intmain()

{Complexc1(3,4),c2(5,-10),c3;

c3=cl+c2;

cout<<，，cl=/z;cl.display();

cout<〈〃c2=〃；c2.display();

cout<<，，cl+c2=/z;c3.display();

return0;

)

14.定義一個(gè)字符串類String,用來存放不定長(zhǎng)的字符串，重載運(yùn)算符“=="，，用

于兩個(gè)字符串的等于比較運(yùn)算。初值自擬。

#include<iostream.h>

ttinclude<string.h>

classString

{public:

String0{p=NULL;}

String(char*str);

friendbooloperator==(String&stringl,String&string2);

voiddisplay();

private:

char*p;

)；

String::String(char*str)

{p=str;

}

voidString::display()

{cout<<p;}

booloperator==(String&stringl,String&string2)

{if(strcmp(stringl.p,string2.p)==0)

returntrue;

else

returnfalse;

)

voidcompare(String&stringl,String&string2)

{if(operator==(stringl,string2)==l)

{stringl.display();cout<</z=zz;string2.display0;}

cout<<endl;

)

intmainO

{Stringstringl("Hello"),string2("Hello");

compare(stringl,string2);

return0;

)

15.定義一個(gè)字符串類String,用來存放不定長(zhǎng)的字符串，重載運(yùn)算符〃<〃，用于兩個(gè)字

符串的小于的比較運(yùn)算。初值自擬。

^include<iostream.h>

#include<string.h>

classString

{public:

String(){p=NULL;}

String(char*str);

friendbooloperator<(String&stringl,String&string2);

voiddisplay();

private:

char*p;

}；

String::String(char*str)

{p=str;

)

voidString::display()

{cout?p;}

booloperator<(String&stringl,String&string2)

{if(strcmp(stringl.p,string2.p)<0)

returntrue;

else

returnfalse;

voidcompare(String&stringl,String&string2)

{if(operator<(stringl,string2)==1)

{stringl.display();cout?z/<z，;string2.display();}

cout<<endl;

)

intmain()

{Stringstringl(/，Book，/),string2("Computer");

compare(stringl,string2);

return0;

)

16.定義一個(gè)字符串類String,用來存放不定長(zhǎng)的字符串，重載運(yùn)算符〃>〃，用于兩個(gè)

字符串的大于的比較運(yùn)算。初值自擬。

ttinclude<iostream.h>

^include<string.h>

classString

{public:

String(){p=NULL;}

String(char*str);

friendbooloperator>(String&stringl,String&string2);

voiddisplay();

private:

char*p;

)；

String::String(char*str)

{p=str;

}

voidString::display()

{cout?p;}

booloperator>(String&stringl,String&string2)

{if(strcmp(stringl.p,string2.p)>0)

returntrue;

else

returnfalse;

)

voidcompare(Stringfcstringl,String&string2)

{if(operator>(stringl,string2)==l)

{stringl.display();cout?/z>/z;string2.display();}

cout<<endl;

)

intmain()

{Stringstringl("Hello"),string2(〃Book〃);

compare(stringl,string2);

return0;}

17.定義一個(gè)描述學(xué)生基本狀況的類，數(shù)據(jù)成員包括姓名、學(xué)號(hào)、C++成果、英語和數(shù)學(xué)

成果，成員函數(shù)包括輸出數(shù)據(jù)，求出總成果和平均成果。數(shù)據(jù)自擬。

#includez，string.h〃

Sinclude<iostream.h>

classCStuScore

{public:

charstrName[12];

charstrStuN0[9];

voidSetScore(charsname[12],charN0[9],floatsO,float

si,floats2)

(

strcpy(strName,sname);

strcpy(strStuNO,NO);

fScore[0]=sO;

fScore[l]=si;

fScore[2]=s2;}

voidprint()

{cout?

cout<〈〃姓名:，z<<strName;

cout<X〃學(xué)號(hào):z，<<strStuN0;

cout?z/C++成果：〃《fScore[0"<〃英語成果：〃<<fScore[l]<<〃數(shù)學(xué)成果：

z/<<fScore[2]<<endl;}

floatGetSUMO

{return(float)((fScore[0]+fScore[l]+fScore[2]));}

floatGetAverage();

private:

floatfScore[3];

}；

floatCStuScore::GetAverage()

{return(float)((fScore[0]+fScore[l]+fScore[2])/3.0);}

voidmain()

{CStuScoreone;

floata,b,c;

charName[12];

charStuN0[9];

cout<<〃姓名:";

cin>>Name;

cout<<〃學(xué)號(hào):〃；

cin>>StuNO;

cout?z/成果1:?成果2：〃<<〃成果3：〃<<〃\n〃;

cin>>a?b>>c;

one.SetScore(Name,StuNO,a,b,c);

one.print();

cout<X〃平均成果為〃<<one.GetAverage()<<〃\n〃；

cout<〈〃總成果〃<<one.GetSUMO?〃\n〃;}

18.先建立一個(gè)Point(點(diǎn))類，包含數(shù)據(jù)成員x,y(坐標(biāo)點(diǎn))。以它為基類，派生出

一個(gè)Circle(圓)類，增加數(shù)據(jù)成員r(半徑)，再以Circle類為干脆基類，派生出一

個(gè)Cylinder(圓柱體)類，在增加數(shù)據(jù)成員h(高)。編寫程序，重載運(yùn)算符和

“>>”，使之能夠用于輸出以上類對(duì)象。

ttinclude<iostream.h>

classPoint

{public:

Point(float=0,float=0);

voidsetPoint(float,float);

floatgetX()const{returnx;}

floatgetY()const{returny;}

friendostream&operator<<(ostream&,constPoint&);

protected:

floatx,y;

)；

Point::Point(floata,floatb)

{x=a;y=b;}

voidPoint::setPoint(floata,floatb)

{x=a;y=b;}

ostream&operator<<(ostream&output,constPoint&p)

{output<<，?[，z?p,x<〈〃,〃<<p.y<<〃]"<<endl;

returnoutput;

)

classCircle:publicPoint

{public:

Circle(floatx=0,floaty=0,floatr=0);

voidsetRadius(float);

floatgetRadius()const;

floatarea()const;

friendostream&operator?(ostream&,constCircle&);

protected:

floatradius;

)；

Circle::Circle(floata,floatb,floatr):Point(a,b),radius(r){}

voidCircle::setRadius(floatr)

{radius=r;}

floatCircle::getRadius()const{returnradius;}

floatCircle::area()const

{return3.14159*radius*radius;}

ostream&operator<<(ostream&output,constCircle&c)

{output<<，zCenter=x?，z,/z<<c.y?z，],r=，，<<c.radius<<z，,

area=，，<<c.area()<<endl;

returnoutput;

)

classCylinder:publicCircle

{public:

Cylinder(floatx=0,floaty=0,floatr=0,floath=0);

voidsetHeight(float);

floatgetHeight0const;

floatarea()const;

floatvolume()const;

friendostream&operator?(ostream&,constCylinderfc);

protected:

floatheight;

)；

Cylinder::Cylinder(floata,floatb,floatr,floath)

:Circle(a,b,r),height(h){}

voidCylinder::setHeight(floath){height=h;}

floatCylinder::getHeight0const{returnheight;}

floatCylinder::area()const

{return2*Circle::area()+2*3.14159*radius*height;}

floatCylinder::volume()const

{returnCircle::area()*height;}

ostream&operator<<(ostream&output,constCylinderfecy)

{output<<，zCenter=[/z<<cy.x<<〃,〃<<cy?y?zz],r=z\<cy.radius?，z,

h=/，<<cy.height

<</，\narea=，，?cy.area()<<，z,volume=，，?cy.volume()<<endl;

returnoutput;

intmain()

{Cylindercyl(3.5,6.4,5.2,10);

cout<<，，\noriginalcylinder:\nx=zz<<cyl.getX()<<，z,y=z/<<cyl.getY()<<〃,r=〃

<<cyl.getRadius()<<〃，h=/，?cyl.getHeight()<<，，\narea=/，?cyl.area()

<<z，,volume=〃<<cyl.volume()?endl;

cyl.setHeight(15);

cyl.setRadius(7.5);

cyl.setPoint(5,5);

cout<<，，\nnewcylinder:\n，z<<cyl;

Point&pRef=cyl;

cout<<z，\npRefasapoint:/z<<pRef;

Circle&cRef=cyl;

cout<<，，\ncRefasaCircle:，，?cRef;

return0;

19.寫一個(gè)程序，定義抽象類型Shape,由他派生三個(gè)類：Circle(圓形)，Rectangle

(矩形)，Trapezoid(梯形)，用一個(gè)函數(shù)printArea分別輸出三者的面積，3個(gè)圖形

的數(shù)據(jù)在定義對(duì)象是給定。

ttinclude<iostream>

usingnamespacestd;

classShape

{public:

virtualdoublearea()const=0;

)；

classCircle:publicShape

{public:

Circle(doubler):radius(r){}

virtualdoublearea()const{return3.14159*radius*radius;};

protected:

doubleradius;

)；

classRectangle:publicShape

{public:

Rectangle(doublew,doubleh):width(w),height(h){}

virtualdoublearea()const{returnwidth*height;}

protected:

doublewidth,height;

)；

classTrapezoid:publicShape

{public:

Trapezoid(doublew,doubleh,double

len):width(w),height(h),length(len){}

virtualdoublearea()const{return0.5*height*(width+length);}

protected:

doublewidth,height,length;

)；

voidprintArea(constShape&s)

{cout<<s.area()<<endl;}

intmain()

(

Circlecircle(12.6);

cout<<，，areaofcircle二〃；

printArea(circle);

Rectanglerectangle(4.5,8.4);

cout<<z'areaofrectangle=〃；

printArea(rectangle);

Trapezoidtrapezoid(4.5,8.4,8.0);

cout<<，，areaoftrapezoid二〃；

printArea(trapezoid);

return0;

)

20.定義一個(gè)人員類Cperson,包括數(shù)據(jù)成員：姓名、編號(hào)、性別和用于輸入輸出的成

員函數(shù)。在此基礎(chǔ)上派生出學(xué)生類CStudent(增加成果)和老師類Cteacher(增加教齡),

并實(shí)現(xiàn)對(duì)學(xué)生和老師信息的輸入輸出。

#include<iostream.h>

ttinclude<string.h>

classCPerson

(

public:

voidSetData(char*name,char*id,boolisman=1)

{intn=strlen(name);

strncpy(pName,name,n);pName[n]='\0';

n=strlen(id);

strncpy(pID,id,n);

pID[n]='\0';

bMan=isman;

)

voidOutput()

cout<<〃姓名：，，?pName?endl;

cout<〈〃編號(hào)：z/<<pID?endl;

char*str=bMan?〃男〃:〃女〃;

cout<X〃性別：z，<<str?endl;

)

private:

charpName[20];

charpID[20];

boolbMan;

)；

classCStudent:publicCPerson

(

public:

voidInputScore(doublescorel,doublescore2,doublescore3)

{

dbScore[0]=scorel;

dbScore[l]=score2;

dbScore[2]=score3;

)

voidPrint()

{

Output();

for(inti=0;i<3;i++)

cout<<〃成果〃<〃：〃<XdbScore[i]〈〈endl;

}

private:

doubledbScore[3];

)；

classCteacher:publicCPerson

(

public:

voidInputage(doubleage)

(

tage=age;

)

voidPrint()

(

Output();

cout<<〃教齡："z<<tage<<endl;

)

private:

doubletage;

}；

voidmain()

(

CStudentstu;

Cteachertea;

stu.SetData(，，LiMingz，,“21010211");

stu.InputScore(80,76,91);

stu.Print();

tea.SetData(〃zhangli〃,〃001〃)；

tea.Inputage(12);

tea.Print();

)

二、其次類題目(20道，每題9分，請(qǐng)自行設(shè)計(jì)輸出格式)

1.某商店經(jīng)銷一種貨物，貨物成箱購進(jìn)，成箱賣出，購進(jìn)和賣出時(shí)以重量為單位，各箱

的重量不一樣，因此，商店須要登記目前庫存貨物的總量，要求把商店貨物購進(jìn)和賣出

的狀況模擬出來。

#include<iostream>

usingnamespacestd;

classGoods

{public:

Goods(intw){weight=w;totalWeight+=w;};

~Goods(){totalWeight-=weight;};

intWeight(){returnweight;};

staticintTotalWeight(){returntotalWeight;}

private:intweight;

staticinttotalWeight;

)；

intGoods::totalWeight=0;

main()

{intw;

cin?w;Goods*gl=newGoods(w);

cin?w;Goods*g2=newGoods(w);

cout<<Goods::TotalWeight()<<endl;

deleteg2;

cout<<Goods::TotalWeight()<<endl;

2.設(shè)計(jì)一個(gè)Time類，包括三個(gè)私有數(shù)據(jù)成員：hour,minute,sec,用構(gòu)造函數(shù)初始化，內(nèi)

設(shè)公用函數(shù)display(Date&d),設(shè)計(jì)一個(gè)Date類，包括三個(gè)私有數(shù)據(jù)成員：

month,day,year,也用構(gòu)適函數(shù)初始化；分別定義兩個(gè)帶參數(shù)的對(duì)象

tl(12,30,55),dl(3,25,2023),通過友員成員函數(shù)的應(yīng)用，輸出dl和tl的值。

#include<iostream>

usingnamespacestd;

classDate;

classTime

{public:

Time(int,int,int);

voiddisplay(constDate&);

private:

inthour;

intminute;

intsec;

);

Time::Time(inth,intm,ints)

{hour=h;

minute=m;

sec=s;

)

classDate

{public:

Date(int,int,int);

friendvoidTime::display(constDate&);

private:

intmonth;

intday;

intyear;

)；

Date::Date(intm,intd,inty)

{month=m;

day=d;

year=y;

)

voidTime::display(constDate&da)

{cout<<da.month?z，//z<<da.day<<z，/，z?da.year<<endl;

cout?hour<<zz:，z<<minute<<z，:，，?sec<<endl;

intmain()

{Timetl(12,30,55);

Datedl(3,25,2023);

tl.display(dl);

return0;

3.設(shè)計(jì)一個(gè)Time類，包括三個(gè)私有數(shù)據(jù)成員：hour,minute,sec,用構(gòu)造函數(shù)初始化，，

設(shè)封一一個(gè)Date類，包括三個(gè)私有數(shù)據(jù)成員：month,day,year,也用構(gòu)適函數(shù)初始化；設(shè)

計(jì)一個(gè)一般函數(shù)display(…)，將display分別設(shè)置為Time類和Date類的友元函數(shù)，

在主函數(shù)中分別定義兩個(gè)帶參數(shù)的對(duì)象11(12,30,55),dl(3,25,2023),

調(diào)用desplay,輸出年、月、日和時(shí)、分、秒。

Sinclude<iostream>

usingnamespacestd;

classDate;

classTime

{public:

Time(int,int,int);

friendvoiddisplay(constDate&,constTime&);

private:

inthour;

intminute;

intsec;

)；

Time::Time(inth,intm,ints)

{hour=h;

minute=m;

sec=s;

}

classDate

{public:

Date(int,int,int);

friendvoiddisplay(constDate&,constTime&);

private:

intmonth;

intday;

intyear;

);

Date::Date(intm,intd,inty)

{month=m;

day=d;

year=y;

}

voiddisplay(constDate&d,constTime&t)

(

cout<<d.month<<，，/，，<<d.day<</，/，，<<d.year<<endl;

cout?t.hour<<z，:zz<<t.minute<<〃:〃<<t?sec<<endl;

intmain()

Timetl(10,30,55);

Datedl(3,25,2023);

display(dl,tl);

return0;

)

4.可以定義點(diǎn)類(Point),再定義一個(gè)類(Distance)描述兩點(diǎn)之間的距離，其數(shù)據(jù)成

員為兩個(gè)點(diǎn)類對(duì)象，兩點(diǎn)之間距離的計(jì)算可設(shè)計(jì)由構(gòu)造函數(shù)來實(shí)現(xiàn)。

#include<iostream>

#include<math.h>

usingnamespacestd;

classPoint

{public:

Point(doublexi,doubleyi){X=xi;Y=yi;}

doubleGetX(){returnX;}

doubleGetY(){returnY;}

private:doubleX,Y;

)；

classDistance

(

public:

Distance(Pointp,Pointq);

doubleGetdist(){returndist;}

private:

Pointa,b;

doubledist;

};

Distance::Distance(Pointql,Pointq2):a(ql),b(q2)

{doubledx=double(a.GetX()-b.GetX());

doubledy=double(a.GetY()-b.GetY());

dist=sqrt(dx*dx+dy*dy);

)

intmain()

{Pointpl(3.0,5.0),p2(4.0,6.0);

Distancedis(pl,p2);

cout<<"Thisdistanceis:〃<<dis.Getdist()<<endl;

return0;}

5.定義點(diǎn)類(Point),