Tokens in C++

Tokens

Type of tokens are as follow:

1. Keyword 
2. Identifiers
3. Constant 
4. Strings
5. Operators 

With the help of tokens We can write C++ codes

1. Keyword

• Specific c++ feature.
• They explicitly reserved identifiers & cannot use as name of the program, variables or other user-defined elements. 
• Complete set of C++ keywords as follow:

2. Identifiers & Constants

• Identifiers refer to the name of the variable, function, array, class etc created by the programmer.

Rules of identifiers

• Only alphabets, digits and underscores are permitted.
• The name cannot start with a digit.
• Uppercase & Lowercase letters are distinct.
• A declared keyword cannot be use as a variable name.