[fpc-pascal] EAccessViolation

Chris Moody inquiry at greensnakedesign.com
Thu Aug 13 22:15:35 CEST 2015

Hi all,

I have this procedure in my program:

procedure DisplayNode (var node:astring);
var c, i:integer;
   if (i=0) then begin
     writeln ('node was empty / non existant');
   for c:=0 to i do
       writeln (node[c]);    // line 85

astring is an Array of String

The code compiles fine, however when I run it I get:

An unhandled exception occurred at $0000000000400B3A :
EAccessViolation : Access violation
   $0000000000400B3A line 85 of Dentist.pas
   $0000000000400C8C line 95 of Dentist.pas

Line 85 is the writeln above, line 95 is where I call this procedure 
from the main code.

How do I track down what is going on?

If your familiar with PHP, my purpose of this procedure is to basically 
emulate the following code:
<pre><?php print_r (node); ?></pre>

Thanks in advance,


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