Compiler-Design-Labs

Installing Softwares for windows

• Flex 2.5.4a
• Bison 2.4.1
• DevC++
• Add C:\GnuWin32\bin;C:\Dev-Cpp\bin; to path.

Run using following command:-

1. For Compiling Lex file only:

      flex filename.l
      gcc lex.yy.c

2. For Compiling Lex & Yacc file both:

      flex filename.l
      bison -dy filename.y
      gcc lex.yy.c y.tab.c

3. For Executing the Program:

     ./a.exe

4. Sometimes when you want to exit after giving input.

     Ctrl+Z and Enter