FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Lexemes are the character strings assembled from the character stream of a program, and the token represents what component of the program’s grammar they constitute. The parser is the driving force for much of the compiler’s front end.

Detailed explanation-2: -A lexeme is a sequence of alphanumeric characters in a token. The term is used in both the study of language and in the lexical analysis of computer program compilation. In the context of computer programming, lexemes are part of the input stream from which tokens are identified.

Detailed explanation-3: -What is another name for Lexical Analyser? Explanation: Lexical Analyzer is also called “Linear Phase” or “Linear Analysis” or “Scanning“. Explanation: Individual Token is also Called Lexeme.

Detailed explanation-4: -A tokenizer breaks a stream of text into tokens, usually by looking for whitespace (tabs, spaces, new lines). A lexer is basically a tokenizer, but it usually attaches extra context to the tokens–this token is a number, that token is a string literal, this other token is an equality operator.

Detailed explanation-5: -Token: A token is a group of characters having collective meaning: typically a word or punctuation mark, separated by a lexical analyzer and passed to a parser. A lexeme is an actual character sequence forming a specific instance of a token, such as num.