Sample Code

 Sample Pascal programs

Regular Pascal programs
    simplest.p (Program stub)
    simplest2.p (Hello world)
    if.p (Demonstrate if)
    add.p (Demonstrate arrays and procedures)
    subscripts.p (Demonstrate differently subscripted arrays )
    case.p (Demonstrate repeat loop and case statement)
    pointer.p (Pointers to non-record types)
Medium Pascal programs
    array.p (Demonstrate arrays)
    array2.p (Arrays with character indexes)
    list.p (Demonstrate linked list - pointers, records)
        list.data (Data that could be used with linked list)
    fact.p (Function call with more complex returning)
Hard Pascal programs
    set.p (Demonstrate the set datatype)
    nestedprocs.p (Nested procedures)
    symboltabletest.p (Pascal simulated to test ST)
    list2.p (Linked list - with function call and dispose)

Pascal programs with errors
    simpleerror.p (Program stub with lexical error)
    symboltableerror.p (Lots of errors to test ST)
    harderror.p (Harder error with undefined pointer)
    funcerror.p (Error using function call incorrectly)
    arrayerror.p (Arrays with string indexes)
    errors.p (Undefined vars and type checking errors)

tokenconsts.h  
lexdata.txt   Random Pascal tokens

C++ code examples
    Using a "union" - variant record
    UML   Inheritance program   output   - shows C++ needed for building the symbol table
    More code from CSS 343
    Example of using STL map as hash table   - provided by Ken Rice

Simple (f)lex example
    makefile   Enter "make" ... creates the executable file a.out
    lex file: ll   Name it whatever you want
    lex.yy.c   lex creates the function yylex() that the parser will call (ugly C code)
    main.cpp   The main that calls yylex()
    ll.txt   Sample data file ... to execute, enter:   a.out < ll.txt
    Output   from the execution
One of the lex links I provided (click on "More Lex" and then "Reserved") talks about it being more efficient to detect reserved words and identifiers simultaneously.

Other makefile examples
Remember makefiles must be named "makefile" or "Makefile" .
If you compile without linking, under unix you get a   ".o"   file, an object file. This is similar to a   ".obj"   file in windows.
    makefile example 1
    makefile example 2
    makefile example 3