第4章 第7题

#include<iostream>#include<iomanip>#include<string>using namespace std;class Teacher;class Student{private:int num;string name;string sex;string position;public:Student(){};Student(int n,string a,string s,string p):num(n),name(a),sex(s),position(p){}friend Teacher;};class Teacher{public:void display(Student &);Teacher(){}Teacher(int n,string a,string s,string p):num(n),name(a),sex(s),position(p){}private:int num;string name;string sex;string position;};void Teacher::display(Student &s){num=s.num;name=s.name;sex=s.sex;position="Teacher";cout<<"留校后,该学生的信息被转换为："<<endl;cout<<setw(4)<<"num"<<setw(10)<<"name"<<setw(6)<<"sex"<<setw(10)<<"position"<<endl;cout<<setw(4)<<num<<setw(10)<<name<<setw(6)<<sex<<setw(10)<<position<<endl;} int main(){Student stu[2]={Student(1023,"Liu","male","Student"),Student(1045,"Chen","male","Student")};Teacher t1;for(int i=0; i<2; i++)t1.display(stu[i] );return 0;}