[MacPerl] for loops

["G. Ann Campbell" <g.ann@lagrangenews.com>]

Does anyone know why, when I use:

   for ($a=4; $a<8; $a+=1){
      print INDEX "$txt[$a]\n";

I get:

   # Use of uninitialized value.

returned in the compiler warnings?
Also, why when I use:

   for ($i=0; $i<7; $i+=1) {
      print TXT "$txt[$i]\n\r";

does it print all the lines of the list to my file, instead of just the first seven?

Pulling my hair out,
Ann
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