C++_编程题库

1、精品31 定义盒子 Box 类，要求具有以下成员：长、宽、高分别为x,y,z，可设置盒子形状；可计算盒子体积；可计算盒子的表面积。#include #include using namespace std;class Boxpublic:int weight;int length;int hight;void box_shape(int w, int l, int h);int box_volume(int w, int l, int h);int box_area(int w, int l, int h);int main()Box mybox;cout mybox.weight mybox

2、.length mybox.hight;int box_v, box_a;mybox.box_shape(mybox.weight, mybox.length, mybox.hight);box_v = mybox.box_volume(mybox.weight, mybox.length, mybox.hight);感谢下载载精品cout This boxs volume = box_v endl;box_a = mybox.box_area(mybox.weight, mybox.length, mybox.hight);cout This boxs area = box_a endl;v

3、oid Box:box_shape(int w, int l, int h)if(w = l & l = h)cout This is a Cube! endl;elsecout This is a cuboid! endl;int Box:box_volume(int w, int l, int h)return w * l * h;int Box:box_area(int w, int l, int h)return 2 * w * l + 2 * l * h + 2 * w * h;感谢下载载精品32 有两个长方柱，其长、宽、高分别为：（1）30 ，20 ，10 ；（ 2）12 ，10

4、， 20 。分别求他们的体积。编一个基于对象的程序，在类中用带参数的构造函数。#include class Boxprivate:int length;int weight;int hight;public:Box(int, int, int);int volume();int main()using namespace std;Box mybox1(30, 20, 10);cout The first Boxs volume = mybox1.volume() endl;感谢下载载精品Box mybox2(12, 10, 30);cout The second Boxs volume = m

5、ybox2.volume() endl;return 0;Box:Box(int l, int w, int h)length = l;weight = w;hight = h;int Box:volume()return (hight * weight * length);感谢下载载精品33 有两个长方柱，其长、宽、高分别为：（1）12 ，20 ，25 ；（ 2）10 ，30 ， 20 。分别求他们的体积。编一个基于对象的程序，且定义两个构造函数，其中一个有参数，一个无参数。#include class Boxprivate:int length;int wight;int height;p

6、ublic:Box();Box(int, int, int);int volume();int main()using namespace std;Box mybox1;cout The first boxs volume = mybox1.volume() endl;Box mybox2(10, 30, 20);cout The second boxs volume = mybox2.volume() endl;return 0;感谢下载载精品Box:Box()length = 12;wight = 20;height = 25;Box:Box(int l, int w, int h)len

7、gth = l;wight = w;height = h;int Box:volume()return length * wight * height;34 声明一个类模板，利用它分别实现两个整数、浮点数和字符的比较，求出大数和小数。感谢下载载精品#include using namespace std;templateclass Comparepublic:Compare(numtype a,numtype b)x=a;y=b;numtype max()return (xy)?x:y;numtype min()return (xy)?x:y;private:numtype x,y;int m

8、ain()Comparecmp1(3,4);coutcmp1.max() is the Maximum of two inteder numbers.endl;coutcmp1.min() is the Minimum of two inteder numbers.endlendl;Compare cmp2(45.78,93.6);coutcmp2.max() is the Maximum of two float numbers.endl;coutcmp2.min() is the Minimum of two float numbers.endlendl;Compare cmp3(a,A)

9、;coutcmp3.max() is the Maximum of two characters.endl;coutcmp3.min() is the Minimum of two characters.endl;return 0;感谢下载载精品35 建立一个对象数组， 内放 5 个学生的数据 （学号、成绩），用指针指向数组首元素，输出第 1 ，3，5 个学生的数据。初值自拟。#includeusing namespace std;class Studentpublic:Student(int n,int s):num(n),score(s)void display()coutnum scor

10、eendl;private:int num;int score;int main()Studentstud5=Student(01,70),Student(02,71),Student(03,72),Student(04,73),Student(05,74);Student *p=stud;for(int i=0;idisplay();return 0;36 建立一个对象数组，内放5 个学生的数据（学号、成绩），设立一个函数max ，用指向对象的指针作函数参数，在 max 函数中找出 5 个学生中成绩最高者， 并输出其学号。初值自拟。#includeusing namespace std;cl

11、ass Studentpublic:Student(int n,int s):num(n),score(s)int num;int score;int main()感谢下载载精品Studentstud5=Student(01,70),Student(02,71),Student(03,72),Student(04,73),Student(05,74);void max(Student *);Student *p=&stud0;max(p);return 0;void max(Student *arr)float max_score=arr0.score;for(int i=0;i5;i+)if

12、(max_scorearri.score)max_score=arri.score;coutmax_score arri.numendl;感谢下载载精品38.定义一个复数类Complex ，重载运算符“ + ”，使之能用于复数的加法运算。将运算符函数重载为非成员、非友元的普通函数。编写程序，求两个复数之和。初值自拟。#include class Complexprivate:double real;double image;public:Complex();Complex(double, double);double get_real();double get_image();Complex

13、operator + (Complex &, Complex &);int main()Complex s1(3, 4);Complex s2(5, -10);感谢下载载精品Complex c3;c3 = s1 + s2;std:cout s1 + s2 = ;std:cout ( c3.get_real() , c3.get_image() i) std:endl;/ Complex s1(3, 4);/ std:cout s1.get_real() std:endl;return 0;Complex:Complex(double r, double i)real = r;image = i

14、;Complex:Complex()real = 0;image = 0;感谢下载载精品double Complex:get_real()return real;double Complex:get_image()return image;Complex operator + (Complex & s1, Complex & s2)Complex c(s1.get_real() + s2.get_real(), s1.get_image() + s2.get_image();return c;39 定义一个复数类Complex ，重载运算符“”，“”，使之能用于复数的加，减运算，运算符重载函数

15、作为Complex类的成员函数。 编程序，分别求出两个复数之和，差。初值自拟。#include 感谢下载载精品class Complexprivate:double real;double image;public:Complex();Complex(double, double);Complex operator + (Complex &);Complex operator - (Complex &);void display();int main()Complex s1(3, 4), s2(5, 6), c;c = s1 + s2;c.display();c = s1 - s2;c.dis

16、play();感谢下载载精品return 0;Complex:Complex()real = 0;image = 0;Complex:Complex(double r, double i)real = r;image = i;Complex Complex:operator + (Complex & s1)Complex c;c.real = s1.real + real;c.image = s1.image + image;return c;感谢下载载精品Complex Complex:operator - (Complex & s1)Complex c;c.real = real - s1

17、.real;c.image = image - s1.image;return c;void Complex:display()using namespace std;cout real image endl;40. 定义一个复数类 Complex ，重载运算符“”，使之能用于复数的加法运算。参加运算的两个运算量可以都是类对象，也可以其中有一个是整数，顺序任意。例如： c1+c2 ，i+c1 ，c1+i 均合法（设 i 为整数， c1，c2 为复数）。编程序，分别求两个复数之和、整数和复数之和。初值自拟。#include class Complex感谢下载载精品private:double r

18、eal;double imag;public:Complex()real=0;imag=0;Complex(double r,double i)real=r;imag=i;Complex operator+(Complex &c2);Complex operator+(int &i);friend Complex operator+(int&,Complex &);void display();Complex Complex:operator+(Complex &c)return Complex(real+c.real,imag+c.imag);Complex Complex:operator

19、+(int &i)return Complex(real+i,imag);感谢下载载精品void Complex:display()using namespace std;cout(real,imagi)endl;Complex operator+(int &i,Complex &c)return Complex(i+c.real,c.imag);int main()using namespace std;Complex c1(3,4),c2(5,-10),c3;int i=5;c3=c1+c2;coutc1+c2=;c3.display();c3=i+c1;couti+c1=;c3.disp

20、lay();c3=c1+i;感谢下载载精品coutc1+i=;c3.display();return 0;41. 有两个矩阵 a 和 b ，均为 2 行 3 列。求两个矩阵之和。重载运算符“+ ”，使之能用于矩阵相加。如c=a+b 。初值自拟。#include using namespace std;class Matrix/ 定义 Matrix类public:Matrix();/ 默认构造函数friend Matrix operator+(Matrix &,Matrix &);/ 重载运算符“ + ”void input();/ 输入数据函数void display();/ 输出数据函数pr

21、ivate:int mat23;Matrix:Matrix()/ 定义构造函数感谢下载载精品for(int i=0;i2;i+)for(int j=0;j3;j+)matij=0;Matrix operator+(Matrix &a,Matrix &b)/ 定义重载运算符“ + ”函数Matrix c;for(int i=0;i2;i+)for(int j=0;j3;j+)c.matij=a.matij+b.matij;return c;void Matrix:input()/ 定义输入数据函数coutinput value of matrix:endl;for(int i=0;i2;i+)f

22、or(int j=0;jmatij;void Matrix:display()/ 定义输出数据函数for (int i=0;i2;i+)for(int j=0;j3;j+)coutmatij ;感谢下载载精品coutendl;int main()Matrix a,b,c;a.input();b.input();coutendlMatrix a:endl;a.display();coutendlMatrix b:endl;b.display();c=a+b;/ 用重载运算符“ + ”实现两个矩阵相加coutendlMatrix c = Matrix a + Matrix b :endl;c.di

23、splay();return 0;42. 将运算符“”重载为适用于复数加法，重载函数不作为成员函数，而放在类外，作为 Complex 类的友元函数。初值自拟。#include 感谢下载载精品class Compareprivate:int real;int imag;public:Compare();Compare(int, int);friend Compare operator+(Compare & c1, Compare & c2);void display();int main()Compare c1(3, 4), c2(2, 5), c3;c3 = c1 + c2;c3.displa

24、y();return 0;感谢下载载精品Compare:Compare()real = 0;imag = 0;Compare:Compare(int r, int i)real = r;imag = i;void Compare:display()using namespace std;cout real imag i endl;Compare operator+(Compare & c1, Compare & c2)Compare c(c1.real + c2.real, c1.imag + c2.imag);return c;感谢下载载精品43. 定义一个字符串类 String ，用来存放

25、不定长的字符串，重载运算符“”，用于两个字符串的等于比较运算。初值自拟。44. 定义一个字符串类 String ，用来存放不定长的字符串，重载运算符 ，用于两个字符串的大于的比较运算。初值自拟。#include #include using namespace std;class Stringpublic:String() p=NULL;String(char *str);friend bool operator(String &string1,String &string2);friend bool operator(String &string1,String &string2);frie

26、nd bool operator=(String &string1,String &string2);void display();private:感谢下载载精品char *p;String:String(char *str) p=str; void String:display() cout(String &string1,String &string2)if(strcmp(string1.p,string2.p)0)return true;elsereturn false;bool operator(String &string1,String &string2)if(strcmp(str

27、ing1.p,string2.p)(string1,string2)=1)string1.display();cout;string2.display();else if(operator(string1,string2)=1)string1.display();cout;string2.display();else if(operator=(string1,string2)=1)string1.display();cout=;string2.display();感谢下载载精品coutendl;int main()String string1(Hello),string2(Book),stri

28、ng3(Computer),string4(Hello);compare(string1,string2);compare(string2,string3);compare(string1,string4);return 0;46. 定义一个描述学生基本情况的类，数据成员包括姓名、学号、C+ 成绩、英语和数学成绩，成员函数包括输出数据，求出总成绩和平均成绩。数据自拟。#include class Studentprivate:char * name;感谢下载载精品int id;int cpp_source;int eng_source;int math_source;public:Studen

29、t(char *, int, int, int, int);void sum_source();void avg_source();int main()Student s(John, 1, 90, 80, 97);s.sum_source();s.avg_source();return 0;Student:Student(char * n, int i, int cs, int es, int ms)name = n;感谢下载载精品id = i;cpp_source = cs;eng_source = es;math_source = ms;void Student:sum_source()s

30、td:cout name The sum of source: cpp_source+eng_source+math_source std:endl;void Student:avg_source()double avg;avg = (cpp_source + eng_source + math_source) / 3;std:cout The avg of source: avg std:endl;47. 先建立一个 Point （点）类，包含数据成员 x， y （坐标点）。以它为基类，派生出一个 Circle （圆）类，增加数据成员 r （半径），再以 Circle 类为直接基类，派生出一

31、个 Cylinder （圆柱体）类，在增加数据成员 h （高）。编写程序，重载运算符 “ ”，使之能够用于输出以上类对象。感谢下载载精品#include class Pointprotected:int x, y;public:Point()x = 0, y = 0;Point(int a, int b)this-x = a;this-y = b;void setX(int a)x = a;void setY(int b)y = b;int getX()return x;int getY()return y;class Circle:public Pointprotected:int r;感谢

32、下载载精品public:Circle(int x, int y, int r):Point(x, y)this-r = r;void setR(int a)r = a;int getR()return r;class Cylinder:public Circleprotected:int h;public:Cylinder():Circle(0, 0, 0),h(0)Cylinder(int x, int y, int r, int h):Circle(x, y, r)this-h = h;void setH(int a)h = a;int getH()return h;friend std:

33、istream & operator(std:istream &, Cylinder &);friend std:ostream & operator(std:istream & input, Cylinder & cc)int _x, _y, _r, _h;感谢下载载精品std:cout Enter the Cylinder: _x _y _r _h;cc.setX(_x);cc.setY(_y);cc.setR(_r);cc.setH(_h);return input;std:ostream & operator(std:ostream & os, Cylinder & cc)os cc.

34、getX() cc.getY() cc.getR() cc.getH() cc;cout cc;感谢下载载精品return 0;48. 写一个程序，定义抽象类型 Shape ，由他派生三个类： Circle （圆形）， Rectangle（矩形）， Trapezoid （梯形），用一个函数 printArea 分别输出三者的面积， 3个图形的数据在定义对象是给定。#include class Shapepublic:virtual double area() const = 0;class Circle:public Shapeprivate:double r;public:Circle(double a):r(a)virtual double area() const感谢下载载精品return 3.14 * r * r;class Rect