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The lexical analyzer is the part of the compiler that detects the token of the program and sends it to the syntax analyzer. It converts the input program into a sequence of Tokens. A C program consists of various tokens and a token is either a keyword, an identifier, a constant, a string literal, or a symbol. For Example: 1) Keywords: Examples- for, while, if etc. 2) Identifier Examples- Variable name, function name etc. 3) Operators: Examples- '+', '++', '-' etc. 4) Separators: Examples- ', ' ';' etc It is a C program to print all the keywords, literals, valid identifiers, invalid identifiers, integer number, real number in a given C program. Examples of different types of tokens in C. Example Keywords: for, if, include, etc Identifier: variables, functions, etc separators: ‘,’, ‘;’, etc operators: ‘-’, ‘=’, ‘++’, etc
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The lexical analyzer is the part of the compiler that detects the token of the program and sends it to the syntax analyzer. It converts the input program into a sequence of Tokens. A C program consists of various tokens and a token is either a keyword, an identifier, a constant, a string literal, or a symbol.
For Example:
Keywords:
Examples- for, while, if etc.
Identifier
Examples- Variable name, function name etc.
Operators:
Examples- '+', '++', '-' etc.
Separators:
Examples- ', ' ';' etc
It is a C program to print all the keywords, literals, valid identifiers, invalid identifiers, integer number, real number in a given C program.
Example
Keywords: for, if, include, etc
Identifier: variables, functions, etc
separators: ‘,’, ‘;’, etc
operators: ‘-’, ‘=’, ‘++’, etc