本文共 2014 字，大约阅读时间需要 6 分钟。

题目一：

//JNU Orion 233//created by Wang Yuchen @ 2018/03/14//第五次试实验 人员类Staff#include 
   
    #include 
    
     #include 
     
      #include 
      
       using namespace std;class Date{public:    Date(int y = 0, int m = 0, int d = 0);    Date(Date &d);    void setDate(int y, int m, int d);    void showDate();    ~Date(){};private:    int year;    int month;    int day;};class Staff{public:    Staff(string newName, int newAge, Date newBirthday);    void setStaff(string newName, int newAge, Date newBirthday);    void showStaff();    ~Staff(){};private:    string name;    int age;    Date birthday;};Date::Date(int y,int m,int d){
  //Date构造函数    year = y;    month = m;    day = d;}Date::Date(Date &d){
  //Date复制构造函数    year = d.year;    month = d.month;    day = d.day;    cout<< "[sys] Calling the Copy Constructor of Staff ..." << endl;}void Date::setDate(int y,int m,int d){
  //Date设置日期    year = y;    month = m;    day = d;}void Date::showDate(){
  //Date显示日期    cout<< year << "" << month << "" << day <
       
        > name;        cout<< "[sys] Input Staff's Age: ";        cin>>age;        cout<< "[sys] Input Staff's Birthday(xxxx-xx-xx): ";        cin>>y>>m>>d;        cout<< endl;        Date birthday(y,m,d);        Staff staff(name,age,birthday);        staff.showStaff();        cout<< "[sys] continue ?(Y/N)" ;        cin>> choice;        if(choice == 'N')            break;    }    return 0;}
       
      
     
    
   

题目二：

。。。。

代码如下：

#include
   
    #include
    
     #include
     
      using namespace std;class Complex{public:    Complex(float na ,float nb);    Complex(float na);    //Complex(Complex &c)    void addComplex(Complex &c2);    void showComplex();    ~Complex(){};private:    float a,b;};Complex::Complex(float na,float nb){    a = na;    b = nb;}Complex::Complex(float na){    a = na;}/*Complex::Complex(Complex &c2){    a = c2.a;    b = c2.b;}*/void Complex::addComplex(Complex &c2){    a += c2.a;    b += c2.b;}void Complex::showComplex(){    if(b == 0){        cout<< a <