LEX and YACC programs for SS Tutorial

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LEX Compilation:

1. Allow execute privileges to "compile" file.
2. Navigate to directory containing lex program.
3. On Linux: ../compile.sh fileName.l
4. On Windows: ..\compile.bat fileName.l

YACC Compilation:

1. Navigate to directory containing lex and yacc programs
   
2. Execute these commands (replace proper file name)
   flex lexfile.l
   bison -yd yaccfile.y
   gcc lex.yy.c y.tab.c
   .\a.exe