What is a token in c language?
Token is the basic fundamental unit that makes up C source code after pre-processing.
What are the various c tokens?
There are five types of C tokens. They are
1. keywords
2. identifiers
3. constants
4. operators
5. separators
Identifiers:
Identifiers are nothing but name of the variable, function, macros or enums. Name of an identifier can be formed using alphabets, numbers, underscore(_) and dollar($). Please note that name of identifier starting with number is not allowed in C programming language
Keywords:
Its a set of words in C programming language which cannot be used as identifiers and they are reserved by programming language itself to perform specific operation.
Constants:
Any unchanged numeric, character, real value or string is a constant.
Operators:
It is a token which can be used to perform operation like arithmetic, logical, comparison, increment, decrement, bitwise etc.
Separators:
Separators used to separate tokens.
Token is the basic fundamental unit that makes up C source code after pre-processing.
What are the various c tokens?
There are five types of C tokens. They are
1. keywords
2. identifiers
3. constants
4. operators
5. separators
Identifiers:
Identifiers are nothing but name of the variable, function, macros or enums. Name of an identifier can be formed using alphabets, numbers, underscore(_) and dollar($). Please note that name of identifier starting with number is not allowed in C programming language
Keywords:
Its a set of words in C programming language which cannot be used as identifiers and they are reserved by programming language itself to perform specific operation.
Constants:
Any unchanged numeric, character, real value or string is a constant.
Operators:
It is a token which can be used to perform operation like arithmetic, logical, comparison, increment, decrement, bitwise etc.
Separators:
Separators used to separate tokens.
| C Tokens | Examples |
| Keywords | auto, do, while, for, struct, break etc |
| Identifiers | num, val, file_name etc |
| Constants | 0x10, 3.14, 'c', "string" etc |
| Operators | +, -, *, / etc |
| Separators | ; : , . ( ) [ ] { } etc |
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