这是我的作业

#include <iostream>
#include <string>
using namespace std;
class Student{
private:
    string Numble;
    int EnglishGrade;
    int ComputerGrade;
    int AverageGrade;
public:
    Student(string numble,int english,int computer){
    Numble=numble;
    EnglishGrade=english;
    ComputerGrade=computer;
    }
    int Getaverage(){
    return (EnglishGrade+ComputerGrade)/2;
    }
    void Show(){
    cout<<"学号为    "<<Numble<<endl;
    cout<<"平均成绩为    "<<Getaverage()<<endl;
    }
};
class teachAdviser{
private:
    string T_Name;
public:
    teachAdviser(string name){
    T_Name=name;
    }
};
class Graduate:public Student{
private:
    teachAdviser t;
public:
    Graduate(teachAdviser &teachadviser){
    t=teachadviser;
    }
    Graduate(Graduate &graduate){
    t=graduate.t;
    }
};
int main(){

}