Hi. I have a problem using a while loop inside a for loop. The for loop does not iterate properly. I am operating in Linux. I have kept some comments in the code to indicate the sort of testing I have been doing. This section of the program is designed to go through a tagged text file and retrieve the lines according to tags (the tags are numbers). These lines have to be retrieved in the iterative order of the tag numbers followed by the order in which they are presented in the input text file. I can not use associated arrays because I am worried about memory requirements. Any help will be much appreciated. 


$output_XML_A_open = "output_xml_d.txt";
open (OUTPUT_XML_A_OPEN, "<$output_XML_A_open");

$new_output_xml_a = "new_output_xml_d.txt";
open (NEW_OUTPUT_XML_A, "+>>$new_output_xml_a");

for ($d=1;$d<10;$d++){
    
    while (<OUTPUT_XML_A_OPEN>){
  $line = $_;
  # print "#############";
        chomp;
 
  if ($line =~ /^(\d{1,10})/){
   
       #print "...............\n";
       $key = $1;
       print "$key\n";
       $xml_content = $_; 
       print "does $key = $d"; 

       if ($d =~ /^$key$/){
     #print "#########";
     print NEW_OUTPUT_XML_A "$xml_content\n";
  
     #if ($line =~ /^(\d{1,10})\s{4}</){
     #   #text removed      
     #}
       }
  }
    }
    #close (OUTPUT_XML_A_OPEN);
}

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In reply to For loop problem by matth

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