pltw unit 1.1.5-1.1.9 vocab

d

bugs

part of a program that causes an error or undesidred output

debug

the process that identifies errors or bugs in computer programs and fixes them

Sequential statements

code that executes in the order they appear in the code segment

initialize

when a variable is given a value for the first time. Before this it is undefined

multiline comment/string

denoted by either ''' or """ these are comments that can generate docstrings and allow the programmer to leave notes in code that span several lines without having to type '#' at the beginning of each line 

incrementing counter

a variable that stores an integer with increasing (or decreasing) value. For example, a common incrementing counter is a variable that starts at 0 and has 1 added to it, resulting in subsequent values 1, 2, 3, and so forth.

list

an ordered collection of items or values. When items are added to a list, they are placed at a certain position in the list. The position of an item in a list is called its index

array

an ordered collection of elements of the same type

literal

• a fixed value in source code, such as 5 or "hello"

conditional statement

•  a feature of a programming language that performs different computations or actions depending on whether a Boolean condition evaluates to true or false

selection

when parts of an algorithm are executed based on a condition being true or false