Intro

Question 1

What is an IDE (Integrated Development Enviorment)

Answer 1

A place to write, run, and debug code and convert it into machine code.

NetBeans, IntelliJ, Visual Studios.

Question 2

What is Syntax

Answer 2

A set of rules you must follow when writing code in a language

It’s similar to grammar rules in real life languages

Question 3

What is a Console

Answer 3

A text interface in a computer that can be used for a variety of purposes

Main use is for outputting text from the program using code.

Question 4

Print statement

Answer 4

Prints text to the console for programmers to see

Print (“Hello World”)- python

Question 5

Modulus

Answer 5

Represented with %

Allows us to get the remainder of a division problem. The console will oly show the remainder

Print(10 % 3)

Console: 1

Question 6

What is a string

Answer 6

Anything enclosed by quotation marks is a string

“Hello World”
“A”

Question 7

Concatenation

Answer 7

Adding two strings together

print( “Game over, “ + 4 + “ was your final score.”)

Question 8

The 4 “4” Dilema

Answer 8

The 4 in quotation marks is a string

The 4 without quotation marks is an integer

Question 9

What is a variable

Answer 9

Something that can store information
Can be referenced and manipulated

Think of it as a cardboard box

Each variable has a type, name, and a peice of information

Name is just a name for the variable

Question 10

Integer

Answer 10

A variable that can store an integer value

Cannot hold decimal values

-2,147,483,648 to 2,147,483,648

Question 11

Booleans

Answer 11

Can store a value of either true or false

Can only hold true or false

Question 12

Float and double variables

Answer 12

Both can store numbers with decimal places

Float: can store up to 32 bits of info

Double: can store up to 64 bits of info

Question 13

String variables

Answer 13

Just like strings, but can be stored in a variable

Used for displaying text and storing input information, outputting information in a readable format for the user

Question 14

Char variables

Answer 14

Can only hold one character

“A”

Useful for reading one button press of one character in a string without a string variable. Like a game controlled by a keyboard

Question 15

The use of variables

Answer 15

To keep track of things in code, such as a user’s name and score to reference and modify.

Question 16

Naming variable big rule

Answer 16

They must be one continuous string

Question 17

camelCase

Answer 17

The writing of code that doesn’t capitalize the first letter but capitalizing all words after. Makes it easier to read

camelCaseVariable

Question 18

The if statement

Answer 18

The most basic conditional statement

If something is true, do one thing
If something isn’t true, do another thing

If (Thing is True) {do what ever is in here}

Question 19

The Else-If statement

Answer 19

The statement that will only be evaluated if the preceding if statement was bypasses due to being false

Question 20

The else statement

Answer 20

The statement that comes after an if/if-else statement, and will always carry out instructions

Carried out if all previous cases are untrue

Question 21

The Switch statement

Answer 21

A collapsible way to write many if else statements

Imput a variable, then determine what “cases” that variable could be

Switch (Var)

Question 22

Why are conditional statements useful

Answer 22

Adds variability to your code/ program runs differently based on user input

The program will want to adapt to user input accordingly( think dynamic difficulty in resident evil 4 )

Question 23

What is an Array

Answer 23

A list of something( integers, strings, can be other arrays too)
All information in an array is related

Similar to a grocery list

Question 24

Indexes

Answer 24

A numbers “place” in an array

Indexing of arrays begin at 0

Question 25

What is something you can’t do with arrays

Answer 25

You cannot change the size an array post, their sizes are final

Think of a bookshelf and trying to change its size after the fact

Question 26

What must happen when initializing an array

Answer 26

You must determine its type (String, integer, double, etc)

You cannot mix and match arrays

Question 27

What is a 2D Array

Answer 27

Putting an array inside of an array

Question 28

Indexing 2D Arrays

Answer 28

We use 2 numbers, first number is the row, second number is the column

Question 29

Loops

Answer 29

A statement that is meant to run certain instructions repeatedly

Question 30

The For Loop

Answer 30

Used for carrying out a set of instructions numerous times

Contains three parts; an integer value, a conditional statement the integer must reach to exit the loop. An operation to modify the integer value after the instructions are completed

Question 31

Infinite loop caution

Answer 31

When making a loop, you must make sure the given initial integer value and the operation will at some point meet.

If not an infinite loop will occur and crash your program

For(int i = 10; i > 0; i++) {

This code will always run because the i integer will always be bigger than zero and will always add 1, therefor causing an infinite loop, as it will never reach zero

Question 32

The For Each Loop

Answer 32

Used for repeating through a list of arrays or lists

The loop will go through each element in an array and carry out a set of instructions for each value

Useful for performing an operation across an entire collection of data

Question 33

The While Loop

Answer 33

Will continuously carry out its instructions while a conditional statement given is true

Can be used to purposely create infinite loops, won’t crash your computer

While( x < 10)

Question 34

The Do While Loop

Answer 34

A loop that will ALWAYS CARRY OUT ITS INSTRUCTIONS AT LEAST ONCE.

Instructions inside loop will run ONCE before checking true or false for a conditional statement

Question 35

Benefit for Loops

Answer 35

Easily perform tasks many time in a row

Able to iterate through lists and arrays

Decreases clutter in your code ( anti-Yandere dev)

Question 36

What is an error

Answer 36

When code doesn’t work as expected, aka bugs

Question 37

Syntaxes Errors

Answer 37

Error that occurs if you fail to meet the programming rules of a language

Will usually be highlighted by an IDE

Question 38

Debugging Syntax Errors

Answer 38

IDE’s underline syntax errors and usually provide helpful hints

Misspelling and grammatical errors basically

Strng name = “NullPointerException” :

Question 39

Runtime Error

Answer 39

Caused by a part of your code not being computed within a reasonable amount of time

Can be caused by an unintended infinite loop

Question 40

Infinite loop error

Answer 40

Happens if the computer is given a condition with no way to finish that task

Puts the computer in error mode and crash due to a never ending condition

Question 41

Preventing runtime errors

Answer 41

You will need to think through the flow of your code before running it

Plan out your code before writing

Question 42

Logic Errors

Answer 42

Code runs smoothly, but doesn’t give to result you wanted

The hardest type to fix, as the error is unknown to the programmer

Question 43

Preventing logic errors

Answer 43

Code small amounts, and test it often.

If you don’t test often, you might many more logic errors

Question 44

Debugging code

Answer 44

Read the error
Transverse to the line of code provided by error
Use online forum for help like StackOverflow

Question 45

Breakpoints

Answer 45

Pauses the program when the line you placed the breakpoint at is reached until you continue