7

#include <iostream> #include <cstring>using namespace std; class Student  {public:     Student(int,char[],char,float);     int get_num(){return num;} char * get_name(){return name;} char get_sex(){return sex;}  void display() {cout<<"num:"<<num<<"\nname:"<<name<<"\nsex:"<<sex<<"\nscore:"<<score<<"\n\n";}   private:  int num;    char name[20];   char sex;  float score; };    Student::Student(int n,char nam[],char s,float so)   {num=n;    strcpy(name, nam) ;   sex=s;   score=so; }    class Teacher  {public:   Teacher(){}Teacher(Student&);     Teacher(int n,char nam[],char sex,float pay);       void display();   private:    int num;    char name[20]; char sex;   float pay; };   Teacher::Teacher(int n,char nam[],char s,float p)  {num=n;   strcpy(name,nam);  sex=s;  pay=p; }   Teacher::Teacher(Student& stud)    {num=stud.get_num();    strcpy(name,stud.get_name());    sex=stud.get_sex();     pay=1500;}  void Teacher::display() {cout<<"num:"<<num<<"\nname:"<<name<<"\nsex:"<<sex<<"\npay:"<<pay<<"\n\n";} int main()  {Teacher teacher1(014000,"jiang",'f',35.5),teacher2;  Student student1(014010,"hu",'m',89.5);    cout<<"student1:"<<endl;  student1.display();       teacher2=Teacher(student1);        cout<<"teacher2:"<<endl;    teacher2.display();   return 0;}