Introduction to the Pascal Programming Language

© 1998 by Dr. Thomas W. MacFarland -- All Rights Reserved

     Instructions:   Review the following program and see if you can 
                     predict the outcome by completing a "pencil 
                     trace" of the code.  

                     Program output is provided at the end of this 
                     page.

     Compiler:       The program was prepared using Standard Pascal 
                     on a UNIX-based host computer.

% cat PASCAL/intro_pencil-02.p
{ Introduction to the Pascal Programming Language
  Dr. Thomas W. MacFarland
  intro_pencil-02.p        
}

{ The purpose of this program is to:

  1.  Demonstrate the write statement and the writeln 
      statement.

  2.  Demonstrate cursor-control differences between the
      write statement and writeln statements.

  3.  Demonstrate how the write statement must have an
      argument, while it is acceptable to use writeln
      without an argument.
}
program Demonstrate_Another_Cursor_Control_Program;

begin

   writeln('This program ');
   write('is fairly simple.');
   write;
   write('Yes or no?');

end.  { intro_pencil-02.p      } 
% pc PASCAL/intro_pencil-02.p
Thu Aug 20 20:11:10 1998  PASCAL/intro_pencil-02.p:
E 10560 line 24 -  Write requires an argument

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