Comp Sci Ch. 3

Question 0

What do software requirements do?

Answer 0

Tell what a program is supposed to do

Question 1

What are the 4 steps of program development?

Answer 1

Establishing requirements, creating a design, implementing the code, and testing the implementation

Question 2

What is software design?

Answer 2

The central planning of a program

Question 3

What is pseudo code?

Answer 3

The outline of a program

Question 4

What is impememtation?

Answer 4

The least creative step. Translating the design into source code

Question 5

What is testing?

Answer 5

Running the code to fix errors with multiple inputs

Question 6

in what way is a program executed?

Answer 6

Linear unless specified otherwise

Question 7

What is the order in which a program is executed called?

Answer 7

Flow of control

Question 8

How are conditional statements tested?

Answer 8

Booleans

Question 9

What is executed with multiple if/ else if statements?

Answer 9

Just one of the statements

Question 10

What is a block statement?

Answer 10

The text between the brackets in a method or condition

Question 11

How do you format code in eclipse?

Answer 11

Highlight it, then hit control-L

Question 12

What is implementation like?

Answer 12

Actually doing something

Question 13

What does an if else statement do?

Answer 13

Catch anything that doesn’t go into the if statement

Question 14

What is a block statement?

Answer 14

Everything between braces

Question 15

What does the ! Do?

Answer 15

Negate a statement

Question 16

What is discrete math?

Answer 16

Logical stuff like statements

Question 17

What does a carrot mean?

Answer 17

And

Question 18

What does an upside down carrot mean?

Answer 18

Or

Question 19

What is XOR?

Answer 19

One is true so the whole thing is

Question 20

When is an implication false?

Answer 20

When P is true but Q isn’t

Question 21

What do letters represent?

Answer 21

Statements that can be true or false

Question 22

This is a complete proposition/statement that is always true

Answer 22

Tautology

Question 23

This is a statement that is always false

Answer 23

Contradiction

Question 24

This is something that is not a tautology or a contradiction

Answer 24

Contingency

Question 25

What is something always tested to be?

Answer 25

True

Question 26

What does || mean?

Answer 26

Or

Question 27

What does && mean?

Answer 27

And

Question 28

What does != mean?

Answer 28

Not equal

Question 29

What is a binary operator?

Answer 29

A thing that uses 2 operands

Question 30

What is a logical not operation aka as?

Answer 30

Logical negation/logical compliment

Question 31

What has a higher precedence: logical not or and/or?

Answer 31

Not

Question 32

What is a short circuited operator?

Answer 32

If part of the logical and/or is true, it stops right away

Question 33

How can you compare characters?

Answer 33

Their location in the alphabet

Question 34

How is unicode ordered?

Answer 34

Punctuation, uppercase alphabetical, lowercase alphabetical

Question 35

Why can't you use == when comparing strings?

Answer 35

THey have their own, compareTo method

Question 36

What is lexiographic ordering?

Answer 36

The same Unicode ordering, with shorter phrases before longer ones, like "book" before "bookshelf"

Question 37

Why don't you use == with floats?

Answer 37

Because it must be equal and not close

Question 38

What is a good way to compare decimals?

Answer 38

if (Math.abs(thing1-thing2)<0.000001)

Question 39

What is an increment?

Answer 39

"++" ex. count++ is really count+1

Question 40

What is a decrement?

Answer 40

"--" ex. count-- is really count-1

Question 41

What would num+=count be?

Answer 41

Num=num+count

Question 42

Can a string use increments and decrements?

Answer 42

Yes

Question 43

What does a repetition statement allow us to do?

Answer 43

Run a statement multiple times

Question 44

WHat are the common means of repetition statements?

Answer 44

While and FOr loops

Question 45

Is while or for more efficient?

Answer 45

For

Question 46

What happens if a while loop's condition is initially false?

Answer 46

It is never executed

Question 47

What is a sentinel value?

Answer 47

The last input

Question 48

What is input validation?

Answer 48

Testing to see if something put into java makes sense

Question 49

What must be done in a while loop to prevent an infinite loop?

Answer 49

Something that will eventually make it false

Question 50

What kind of an error is an infinite loop?

Answer 50

Logical

Question 51

What does an iterator do?

Answer 51

Read inputs from a file and process all of them at once

Question 52

What are the iterator methods?

Answer 52

.Next and .hasNext

Question 53

What does IO mean?

Answer 53

Input/output

Question 54

What is an exception?

Answer 54

When things go other than what was intended

Question 55

When is a while loop useful?

Answer 55

When we have no clue how many times something is going to run

Question 56

When is a for loop useful?

Answer 56

When we know exactly how many times a loop is going to run

Question 57

What is a for loop initialization?

Answer 57

SOmething that is executed before the loop runs

Question 58

What is a for loop condition?

Answer 58

The statement being tested

Question 59

What is a for loop incrament?

Answer 59

The thing that is executed every time a loop is run

Question 60

Is it necessary that a loop is executed?

Answer 60

No

Question 61

What must you do to exclude parts of the for statement?

Answer 61

Separate the parts you are using with semicolons

Question 62

When would you leave initialization blank?

Answer 62

When you have already defined a variable

Question 63

What does the forEach loop do?

Answer 63

Process something like an iterator