Classes with Arrays using other class objects

Question

I have two completed classes at the moment, the Teacher and Student classes have default definitions.

Right now I am trying to figure out the Classroom and School classes. The Classroom class is supposed to hold a Teacher and an array of 35 Student objects.

The School class is supposed to contain an array of 100 Classroom objects.

How do I do this, I sort of know how to initialize an array in a class but I'm not sure how to achieve this using the objects of another class?

class Teacher
{
   private:
     string last;
     string first;
     int gradeLevel;
   public:
     Teacher();
};

Teacher::Teacher()
{
   last = "AAAA";
   first = "BBBB";
   gradeLevel = 0;
}

class Student
{
   private:
      string studLast;
      string studFirst;
   public:
      Student();
};

Student::Student()
{
   studLast = "AAAA";
   studFirst = "BBBB";
}

class Classroom
{

};

class School
{
};

Instead of array you can use vector.

user1438832
– user1438832

2017-04-06 04:21:41 +00:00
Commented Apr 6, 2017 at 4:21 — user1438832
– user1438832, Commented Apr 6, 2017 at 4:21
@user1438832 I need to use an array

Alex204
– Alex204

2017-04-06 04:22:54 +00:00
Commented Apr 6, 2017 at 4:22 — Alex204
– Alex204, Commented Apr 6, 2017 at 4:22
@Alex204: Why would you "need" to use an array?

Christian Hackl
– Christian Hackl

2017-04-06 05:07:49 +00:00
Commented Apr 6, 2017 at 5:07 — Christian Hackl
– Christian Hackl, Commented Apr 6, 2017 at 5:07

Jiahao Cai · Accepted Answer · 2017-04-06 04:23:48Z

2

For example:

class Classroom
{
private:
    Teacher t; // create a teacher
    Student s[35]; // create an array of 35 students
...
};

class School
{
private:
    Classroom rooms[100]; // create an array of 100 rooms
...
};

answered Apr 6, 2017 at 4:23

Jiahao Cai

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Comments

andria_girl · Accepted Answer · 2017-04-06 04:37:02Z

1

What you want to do here is create a Teacher, just one like you wanted, and then create an array of Student objects, which if you didn't know is done like Student students[35];. Then to the School object which is just an array of Classroom objects. Here is the full code:

class Classroom
{
private:
    Teacher teacher;
    Student students[35];
public:
    Classroom();
};

Classroom::Classroom()
{
    ;
}

class School
{
private:
    Classroom classrooms[100];
public:
    School();
};

School::School()
{
    ;
}

Note: all of the items in the arrays are initialized when you write something like Student students[35];. You can check this by doing cout << this->stduents[12].studLast << endl;

edited Apr 6, 2017 at 4:37

answered Apr 6, 2017 at 4:26

andria_girl

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