发布时间 : 2024/6/12 4:51:50 星期三 文章C++面向对象程序设计试题集更新完毕开始阅读d8771a49fe4733687e21aa6a

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1??1?1? ?1?1??#include

using namespace std; int main() {

int a[5][5]; int ii,jj; for (ii = 0; ii< 5; ii++) { for (jj = 0; jj < 5; jj++) { if (ii - jj < 1) { a[ii][jj] = 1; } else { a[ii][jj] = ii+1 - jj; } } } for(ii=0;ii<5;ii++) { for(jj=0;jj<5;jj++) cout<

}

23、定义盒子Box 类，要求具有以下成员：可设置盒子形状；可计算盒子体积；可计算盒子的表面积。 #include using namespace std; class Box {

public: Box(double,double,double); double area(); double v(); private: double x,y,z; };

Box::Box(double x1,double y1,double z1) { x=x1; y=y1; z=z1; }

double Box::area() { return (2*(x*y+y*z+x*z)); }

double Box::v() { return (x*y*z);

}

int main() { Box B(2,3,4); cout<<\表面积：\ cout<<\体积：\ return 0; }

24、33、声明一个哺乳动物Mammal 类，再由此派生出狗Dog 类，声明一个Dog 类的对象，观察基类与派生类的构造函数与

析构函数的调用顺序。 #include using namespace std; class mammal {

public: mammal()//默认构造函数 { cout<<\ } ~mammal() { cout<<\ } };

class dog :public mammal {

public: dog() { cout<<\ } ~dog() { cout<<\ } };

int main() { dog a; return 0; }

25、30、定义一个基类有姓名、性别、年龄，再由基类派生出教师类和学生类，教师类增加工号、职称和工资，学生类增

加学号、班级、专业和入学成绩。 #include #include using namespace std; class person {

public: person(string ,string,int); protected: string name; string sex; int age; };

person::person(string n, string s, int a) { name=n; sex=s; age=a; }

class teacher :public person {

public: teacher(string ,string,int,string,string,double); void display(); private: string work_num; string title; double wage; };

teacher::teacher(string n, string s, int a, string wo, string t, double wa):person( n,s,a) { work_num=wo; title=t; wage=wa; }

void teacher::display() { cout<<\姓名：\性别：\年龄：\ cout<<\工号：\职称：\工资：\}

class student: public person {

public: student(string,string,int,string,string,string,double); void show(); private: string num; string grade; string major; double score; };

student::student(string n, string s, int a, string nu, string g, string m, double sc):person(n,s,a) //注意：

只写 n，不是string n { num=nu; grade=g; major=m; score=sc; }

void student::show() { cout<<\姓名：\性别：\年龄：\ cout<<\学号：\年级：\专业：\入学成绩：\}

int main() { teacher t(\侯传旺\男\教授\ t.display();

student s(\秦洪敏\女\大二\应用心理学\ s.show(); return 0; }

26、写一个Complex类，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。如例题10.3 #include class complex {

private: double a; double b; public:

complex(); complex(double i,double j); friend complex operator +(complex&,complex); void setreal(double x); void setimag(double y); void getreal(); void getimag(); friend ostream& operator <<(ostream& out,complex& x); friend istream& operator >>(istream& in,complex& x); };

complex::complex():a(0),b(0){}

complex::complex(double i,double j):a(i),b(j){} complex operator +(complex&x,complex y) { y.a+=x.a; y.b+=x.b; return complex(y.a,y.b); }

ostream& operator<<(ostream& out,complex &x) { out<

istream& operator >>(istream& in,complex& x) { in>>x.a>>x.b; return in; }

void complex::setreal(double x){a=x;} void complex::setimag(double y){b=y;} void complex::getreal() {cin>>a;}

void complex::getimag() {cin>>b;} int main() {

complex a; complex b; cin>>a>>b;

//cout<

27、实现一个名为SimpleCircle的简单圆类，其数据成员int *itsRadius为一个指向其半径值的指针，设计对数据成员的各种操作，给出这个类的完整实现并测试这个类。 #include #define PI 3.1415926 using namespace std; class SimpleCircle {

public: SimpleCircle(int *); double fun(); double area(); private: int *itsRadius; };

SimpleCircle::SimpleCircle(int * i) {