Tokens are basic building blocks of C Programming. The smallest individual unit in a c program is known as a token. In a C source program, the basic element recognized by the compiler is the "token." A token is source-program text that the compiler does not break down into component elements.
For example, the following C statement consists of five tokens −
Tokens are keyword, identifier, constant, variable or any symbol which has some meaning in C language. A C program can also be called as collection of various tokens. Token in C includes characters, keywords, constants, identifiers, strings, special symbol, operators, and comments.
Characters – A character denotes any alphabet, digit or symbol used to represent information.
Keywords – Keywords are the words whose meaning has already been explained to the C compiler.
Constants – Constants are expressions with a fixed value
Identifiers – The term identifier is usually used for variable names
Strings – Sequence of characters.
Special Symbols – Symbols other than the Alphabets and Digits and white-spaces.
Operators – A symbol that represent a specific mathematical or non-mathematical action.
Semicolon - In a C program, the semicolon is a statement terminator. That is, each individual statement must be ended with a semicolon. It indicates the end of one logical entity.
Comments - Comments are like helping text in your C program and they are ignored by the compiler. They start with /* and terminate with the characters */ as shown below −
You cannot have comments within comments and they do not occur within a string or character literals.
For example, the following C statement consists of five tokens −
printf("Hello, World! \n");
printf
(
"Hello, World! \n"
)
;
Tokens are keyword, identifier, constant, variable or any symbol which has some meaning in C language. A C program can also be called as collection of various tokens. Token in C includes characters, keywords, constants, identifiers, strings, special symbol, operators, and comments.
Characters – A character denotes any alphabet, digit or symbol used to represent information.
Keywords – Keywords are the words whose meaning has already been explained to the C compiler.
Constants – Constants are expressions with a fixed value
Identifiers – The term identifier is usually used for variable names
Strings – Sequence of characters.
Special Symbols – Symbols other than the Alphabets and Digits and white-spaces.
Operators – A symbol that represent a specific mathematical or non-mathematical action.
Semicolon - In a C program, the semicolon is a statement terminator. That is, each individual statement must be ended with a semicolon. It indicates the end of one logical entity.
Comments - Comments are like helping text in your C program and they are ignored by the compiler. They start with /* and terminate with the characters */ as shown below −
/* my first program in C */
You cannot have comments within comments and they do not occur within a string or character literals.
Related topics:
Character Set in C | White Space Characters in C | Trigraph Characters in C | Extended Characters in C | Escape Sequence in C | Comments in C | Keywords in C | Identifiers in C | Declaration in C
List of topics: C Programming
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