Strings and languages Terms for a part of string Term Definition Prefix of S A string obtained by removing zero or more trailing symbol of string S. e.g., ban is…

Token: Sequence of character having a collective meaning is known as token. Typical tokens are, 1) Identifiers 2) keywords 3) operators 4) special symbols 5) constants Pattern: The set of…

The lexical analyzer is the first phase of compiler. Its main task is to read the input characters and produce as output a sequence of tokens that the parser uses…

No. Phase Pass 1 The process of compilation is carried out in various step is called phase. Various phases are logically grouped together to form a pass. 2 The phases…

No. Single pass compiler Multi pass compiler 1 A one-pass compiler is a compiler that passes through the source code of each compilation unit only once. A multi-pass compiler is…

One complete scan of a source program is called passPass include reading an input file and writing to the output fileIn a single pass compiler analysis of source statement is…

The phases are collected into a front end and back end Front end The front end consist of those phases, that depends primarily on source language and largely independent of…

In addition to a compiler, several other programs may be required to create an executable target program PreprocessorPreprocessor produces input to compiler. They may perform the following functions,Macro processing: A preprocessor may…

No. Compiler Interpreter 1 Compiler takes entire program as an input. Interpreter takes single instruction as an input. 2 Intermediate code is generated. No Intermediate code is generated. 3 Memory…

A compiler is a program that reads a program written in one language and translates into an equivalent program in another language               Major functions done…