Project 3: Lexical Analyzer and Token Generator | Compiler Design Sessional

Original author：Dept. of CSE, UGV, Barishal

Original source：https://www.youtube.com/embed/7QT-qrm-wns

In this tutorial, we will build a Lexical Analyzer and Token Generator for Compiler Design. The project reads a source program from a text file or keyboard input, identifies different types of tokens, and displays the generated tokens along with their corresponding lexemes in a well-formatted table. This project is suitable for Compiler Design, System Programming, Programming Languages, and CSE laboratory courses. What you will learn: • Introduction to lexical analysis • Understand the phases of a compiler • Read source code from a text file or keyboard • Identify keywords • Detect identifiers • Recognize constants • Identify operators • Detect delimiters • Generate tokens from source code • Display tokens and lexemes in tabular format • Build a simple lexical analyzer using C Project Tasks: Accept source code from a text file or keyboard Scan the source program character by character Identify keywords Detect identifiers Recognize numeric and character constants Identify operators Detect delimiters and special symbols Generate tokens for each lexeme Display tokens and lexemes in a formatted table Topics Covered: • Compiler Design • Lexical Analysis • Lexical Analyzer • Token Generation • Tokens and Lexemes • Keywords • Identifiers • Constants • Operators • Delimiters • Symbol Recognition • Scanner • Compiler Phases • C Programming • File Handling • String Processing Expected Output: • Source code successfully scanned • Tokens generated correctly • Lexemes identified accurately • Tabular display of tokens and lexemes • Working lexical analyzer implementation Source Code: The complete source code is available in the pinned comment.