Consider the following code:

public class CustomerList{

private List customers;

public delegate void ChangeHandler (CustomerList customers);

public event ChangeHandler ChangedList;

public CustomerList () {customers = new List ();

}

public void Add (Customer c) {customers. Add (c);

}

public static CustomerList operator + (CustomerList customers, Customer c) {

customers. Add (c); return customers;

}

}

As you can see, the CustomerList class overloads the binary + operator to make it easier for you to add Customer objects to a CustomerList object.

Now, write code that uses the + = operator to add a Customer object named newCustomer to a CustomerList object named customers.

Question

Mara Skinner

Computers & Technology

29 June, 00:27

Consider the following code:

public class CustomerList{

private List customers;

public delegate void ChangeHandler (CustomerList customers);

public event ChangeHandler ChangedList;

public CustomerList () {customers = new List ();

}

public void Add (Customer c) {customers. Add (c);

}

public static CustomerList operator + (CustomerList customers, Customer c) {

customers. Add (c); return customers;

}

}

As you can see, the CustomerList class overloads the binary + operator to make it easier for you to add Customer objects to a CustomerList object.

Now, write code that uses the + = operator to add a Customer object named newCustomer to a CustomerList object named customers.

+4

Answers (1)

Know the Answer?

Karter Wade · Answer 1

customers + = newCustomer;

Explanation:

The operator + = expands into + and assignment. The assignment is not overloaded so the required code is

customers + = newCustomer;

This expands into

customers = customers + newCustomer;

The overloaded + operator is called for the right expression. This returns a 'CustomerList', which is then assigned through the = operator to 'customers'.