C++ Programming

Question 1

Where does C++ inherit most of its syntax and structure from? Is all C code valid in C++?

Answer 1

Question 2

What are the basic elements of a C++ program?

Answer 2

Question 3

What are most programs made up of? What is required for a program as an entry point?

Answer 3

Question 4

How many main functions should / can exist?

Answer 4

Exactly one

Question 5

What must be included to use ‘cout’?

Answer 5

Question 6

Is C++ a compiled or interpreted language? C++ source code must be ___ and ___.

Answer 6

Question 7

How can you, from the command line, build a C++ executable in one step? Multiple steps?

Answer 7

Question 8

What is a statement? What is the simplest statement in C++?

Answer 8

Question 9

What is an expression and a type?

Answer 9

Question 10

What types does C++ have in common with C?

Answer 10

Question 11

What are the different forms of constant expressions?

Answer 11

Question 12

Which of the following are valid / invalid? Why?

Answer 12

Question 13

What are the set of operators in C++? Does C++ do conversions?

Answer 13

Question 14

What are statements and compound statements / blocks? Do blocks have a scope?

Answer 14

Question 15

What is C++ control flow? What is a sequence? Selection? Repetition?

Answer 15

Question 16

What are the different ways of doing multi-way selection in C++?

Answer 16

Question 17

What are the different forms of repetition control flow?

Answer 17

while loops, for loops, do-while loops

Question 18

What are structures? What is the keyword? What is the difference between a structure and a class with regards to members?

Answer 18

Question 19

What is the syntax of declaring a structure?

Answer 19

Question 20

What is the difference between C and C++ with regards to declaring an instance of a struct?

Answer 20

Question 21

How do you access a field of a structure? What is we were accessing the fields from a pointer variable?

Answer 21

Question 22

What do the following assignments do:

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Question 23

What are pointers?

Answer 23

Question 24

What are the two main uses for pointers in C++?

Answer 24

Question 25

Who is responsible for garbage collection and freeing dynamic memory? What keywords are used?

Answer 25

Question 26

What is the syntax for declaring a pointer? What about a pointer without a specific type attached to it?

Answer 26

Question 27

What is the reference operator? What does it do?

Answer 27

Question 28

Reference operator example

Answer 28

Question 29

How can you make a pointer point to whatever another pointer is pointing at?

Answer 29

Question 30

What is the Dereference operator? How is it used with pointers?

Answer 30

Question 31

Dereference operator examples:

Answer 31

Question 32

What are some misuses of the dereference operator?

Answer 32

Question 33

When SHOULD pointers be ued?

Answer 33

Question 34

What are void pointers?

Answer 34

Question 35

What is pointer casting? What is the syntax?

Answer 35

Question 36

Are functions in C++ similar to those in C? Where must they be declared?

Answer 36

Question 37

What is contained within a function declaration in C++?

Answer 37

Question 38

Function declaration example"

Answer 38

Question 39

What is a function definition?

Answer 39

Question 40

What is a function call?

Answer 40

Question 41

By default, C++ passes parameters into functions by...? What does this mean?

Answer 41

Question 42

What is the output of the following function:

Answer 42

Question 43

How does C++ allow parameters to be passed by reference?

Answer 43

Question 44

Example of pass-by-reference:

Answer 44

Question 45

How can we assure the value of a variable is not changed during the function?

Answer 45

Question 46

How can a function end? When is a function allowed to return by reaching the end of the function body?

Answer 46

Question 47

What are the following function modifiers: inline constexpr static

Answer 47

Question 48

How do C++ arrays differ from C arrays with regards to dynamically allocating arrays?

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Question 49

What are two different ways of initializing an array?

Answer 49

Question 50

Can you have a pointer point to an element in an array?

Answer 50

Question 51

What is the syntax of allocating and deallocating arrays in C++?

Answer 51