1. A Lex program to recognize and count the number of identifiers in a given input.
2. A Lex program to count the characters, words, spaces, and lines in a given input file.
3. A Lex program to count the number of comment lines in a given C/C++/Java program.
4. A Lex program to identify an integer, floating point, exponential, or complex number.
5. A Lex program to identify a Grameenphone/Airtel/Robi/Banglalink/Teletalk number.
6. A Lex program to recognize whether a given sentence is simple, compound, or complex.
7. A Lex program to identify "to be" verb.
8. Find the FIRST and FOLLOW of a given grammar.

Construct a complete 'Lexer' using Lex and a complete 'Parser' using C/C++ (either LL(0) or LL(1) parser).

Special thanks to:

• @najnin26
• @fms-byte
• @waliulrayhan

Ensure you have the following tools installed:

• MinGW: Download
• Flex: Download
• Bison: Download

Run Flex

flex filename.l

Compile using GCC

gcc lex.yy.c

Execute the Program

a.exe