Wk. 9

Question 1

What should header files contain and not contain?

Answer 1

Declarations. Should not contain code that will allocate space in memory

Question 2

How do you invoke the linker?

Answer 2

Providing all of the .o files without the -c (compile only) switch

Question 3

Does the order matter matter when linking .o files?

Answer 3

No, the order does not matter. The compiler will still create the a.out file

Question 4

What is object oriented programming?

Answer 4

A combination of data and functions to manipulate that data into singular objects

Question 5

What is the syntax for calling a function member?

Answer 5

[data type] [Tag Name]::[function identifier][parameter list] (the :: is the prefix)

Question 6

What is the :: prefix called?

Answer 6

Scope resolution operator

Question 7

If you want to make a const member function, where does the const go?

Answer 7

After the formal parameter list

Question 8

Why is the main function not a member function?

Answer 8

It does not have a Tag Name or scope resolution operator.

Question 9

What is the difference between a class and a struct?

Answer 9

The default accessibility of their members. Structs are public by default, classes are private by default

Question 10

What does ADT stand for?

Answer 10

Abstraction Data Type

Question 11

What is an ADT?

Answer 11

Complex data type that contains data alongside functions to manipulate that data. Uses encapsulation to hide implementation details.

Question 12

What are class .cpp files called?

Answer 12

Implementation files

Question 13

What is a constructor?

Answer 13

A special member function that is called when space is allocated for an object

Question 14

What is the syntax for a constructor?

Answer 14

[tag name] : : [function name/same as tag name][parameter list]. There is no return type

Question 15

Can a constructor have a non empty parameter list?

Answer 15

Yes, could use defaults arguments from function prototype

Question 16

What is a default constructor?

Answer 16

A constructor that does not require explicit arguments in order to execute

Question 17

What happens if a class has no constructors declared?

Answer 17

Compiler will generate a default ctor if it is needed.

Question 18

What is a Type Conversion Ctor?

Answer 18

A ctor where the 1st parameter is of a different type than the object being created. If there are additional parameters, they must have default arguments.

Question 19

What is a copy ctor?

Answer 19

A ctor where the 1st parameter must be a const reference to and existing object of the same type (Cbox referring to another Cbox object) . If there are additional parameters, they must have default arguments.