第四单元老师学生类(zuoye)

#include<iostream>#include<string>using namespace std;class student; class teacher{private:string name;string id;public:teacher (string a,string b){name=a;id=b;}void teacher_decide(student* p);void show1(){cout<<name<<"   "<<id<<endl;}};class student{private:string name;string id;double math;double chinese;public:student(string a,string b){ name=a;     id=b;}friend void teacher::teacher_decide(student* p);void show(){cout<<"name:"<<name<<"  "<<"id:"<<id<<"  "<<" math:"<<math<<"  "<<"chinese:"<<chinese<<"\n";}}; void teacher::teacher_decide(student* p) { for(int i=0;i<4;i++,p++){cout<<"please input math's score:"<<endl;int m=0,n=0;    cin>>m;p->math=m;   cout<<"please input chinese's score:\n";  cin>>n;p->chinese=n;cout<<endl;}          }int main(){teacher teacher1("mingge","zhanjian");student  student1[4]={student("huangchongwen","xingning"),student("linroqin","huizhuo"),student("chenxi","shangtuo"),student("dazhong","zhuohai")};     student* q=student1; teacher1.teacher_decide (q); for(int j=0;j<4;j++) { student1[j].show(); } teacher1.show1 ();    return 0;}