Toknes in C++

The smallest individual unit in a program is known as token or a lexical unit.

C++ has the following tokens:-

Keywords

Keywords are the words that convey a special meaning to the language compiler. These are reserved for special purpose and must not be used as normal identifier names

Identifiers

An identifier is an arbitrarily long sequence of letters and digits. The first Characters must be

A letter

The underscore ( _ ) counts as a letter.

Some valid identifiers are

Myfile

DATE9_7_77

Z2T0Z9

Literals

Literals are data items that never change their values during a program run. C++ have several kind of literals

Integer-Constant

Floating –Constant

Character-Constant

String-Literals

Operators

Operators are tokens that trigger some computation when applied to variables and other objects in an expressions.

Following are some of the Operators

&= Address operator

*= Indirection Operator

+= Unary Plus

-=Unary Minus

_= Bitwise Complement

++= Increment operator

--= Decrement operator

!= Logical negation