C++ Essentials: Binary, Variables, Keywords, and Comments Review

binary system

The binary system is the system computers use for storing numbers and that they can perform any operation upon them.

integers

Integers are those which are devoid of the fractional part.

floating point numbers

Floating point numbers contain (or are able to contain) the fractional part.

type

A type is a characteristic of a number which determines its kind, range and application.

octal representation

The characteristics of the octal representation are having numbers from 0-7 digits and using base-8 numbering rather than base-10 numbering.

variable

Variables are containers that store the results of such operations in order to use them in other operations.

components of a variable

The components of a variable are a name, a type, and a value.

rules of writing a variable

The four main rules of writing a variable are the name of the variable must be composed of upper-case or lower-case Latin letters, digits and the character _ (underscore); the name of the variable must begin with a letter; the underline character is a letter; upper- and lower-case letters are treated as different.

declaration

A declaration is a syntactic structure that binds a name provided by the programmer with a specific type offered by the C++ language and it relates to a variable by declaration giving its purpose to the variable.

assignment operator

Assignment operator gives a value to the newly declared variable.

keyword (reserved keyword)

A keyword (reserved keyword) is a list of words that play a very special role in every C++ language program.

reserved keyword

A keyword is reserved by you not being able to use them as names.

comment

A comment is a way to explain to humans their code but not the compiler.

line comment symbol

// comment

block comment symbol

/* comment */