Basic Computer Science

A Context-Free Grammar is a quadruple that consists of terminals,non-terminals, start symbol and productions.   Terminals: These are the basic symbols from…

The tasks of the Error Handling process are to detect each error, report it to the user,…

Syntax analyzers follow production rules defined by means of context-free grammar. The way the production…

The parser or syntactic analyzer obtains a string of tokens from the lexical analyzer and…

Syntax analysis or parsing is the second phase of a compiler. In this chapter, we…

DFA minimization stands for converting a given DFA to its equivalent DFA with minimum number…

The lexical analyzer needs to scan and identify only a finite set of valid string/token/lexeme…

Finite automata is a state machine that takes a string of symbols as input and…

Consider the following grammar fragment: stmt → if expr then stmt | if expr then…

There are 3 specifications of tokens: 1)Strings 2) Language 3)Regular expression Strings and Languages ·         An alphabet or character…