Hello, folks!

VTU 18CSL66 System Software Lab Programs 6th Sem

Prerequisites

Install LEX & YACC packages on Linux[Ubuntu]
Follow the below Terminal Commands

• sudo apt-get update

• sudo apt-get install flex

• sudo apt-get install bison

• sudo apt-get install byacc

• sudo apt-get install bison++

Cross platform source code.

In windows you need gcc compiler or any IDE such as Visual Studio, etc..

To Compile Lex Program:

flex file_name.l

After the successful compilation of the lex program the lex.yy.c file is generated automatically

• To Run Lex Program :

gcc lex.yy.c

After the successful Run of the lex program the a.exe file is generated automatically

• To see the output of Lex program type

a.exe 

To Compile Yacc program :

bison –d filename.y

• After the successful compilation of the yacc program the 2 files is generated automatically namely

1 file_name.tab.c and
2 file name.tab.h

Rename that 2 files to y.tab.c and y.tab.h

• To Run Lex and Yacc Program :

 gcc lex.yy.c y.tab.c

After the successful Run of the lex and Yacc program the a.exe file is generated automatically

• To see the output of Lex and Yacc program type

 a.exe in the command prompt

Tutorials

• "Installation and Full Setup on YouTube" - Computer Science Geeks
  

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