comp sci

Hard code

To insert a specific value into your code; refers to data that is an actual value, in other words not able to vary. Example: System.out.print(5+2); the mathematical expression is hard

Variable Scope

Where a programmer can legally use a variable without generating an error

Data type

A classification of the type of data that is stored in a particular way in the computer’s memory. Ex: int, double, String

Statement

An instruction for the computer; a single line of instruction ending with a semicolon

Declaring a variable

A statement that defines a variable with a data type

Initializing a variable

The assignment of a value to a variable

Conditional

An expression that only evaluates to true or false

Compiler

A program which takes the code you have written and translates it into the binary ones and zeros of actual machine code. Also, alerts the programmer to any errors in code

Bug

An error in a program that prevents the program from running as expected

Output

Data generated by a computer and sent to an output device

Order of operations

The sequence in which calculations should be performed that involve more than one arithmetic or logical operation

Logical operator

The use of simple Boolean logic such as and, or and not

Arithmetic operator

The symbols that represent mathematical operations

Integrated development environment (IDE)

A visual tool or program that allows programmers to develop programs more efficiently, such as CodeHS or Eclipse

Camelcase

A compound word which uses capital letters to delimit the word parts; refers to capitalizing the first letter of every subsequent word in a variable’s name

Debugging

Finding and fixing errors in programs

Variable

A way to store a piece of data which can then be modified at any time

Concatenation

Combining two things together, such as two strings of text

Skeleton Code

Bare bones template for a program in which you will write your code

Case sensitive

When upper and lowercase letters are treated as distinct/different

Console window

Where output appears

Comment

An annotation in code that is ignored by the computer compiler

Literal

An actual value

Syntax

The set of rules for a programming language; How you must write something

Compound/shorthand operators

Operators that simultaneously perform an operation (e.g. addition) and an assignment. Ex: +=,

Naming convention

Refers to the way we should name things

Code block

One or more statements that are grouped together with curly brackets {}

Relational operator

An operator that describes a relationship between two things, like inequalities. Ex:

Nesting

Putting statements inside of other statement