Converting awk to perl


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Converting awk to perl

Hello. I'm currently teaching myself Perl and was trying to turn an awk code that I had written into Perl. I have gotten stuck on a particular part and a2p has not helped me at all. The task was to take a .csv file containing a name, assignment type, score and points possible and compute it into a weighted grade.
An example of the .csv file is:



Code:
Billy     Final           Final     82     100
Billy     Survey        WS       5       5
Bob     Homework   H01      19     100
Bob     Homework   H02      82     100
 Sam    Quiz            Q01      95     100

Here is the code that I have:


Code:
#!/usr/bin/perl
   
  open ($input, '<', $ARGV[0]);
   
  $header=<$input>;   
   
  $i =0;
   
  %data = ();
   
  @names;
   
  while ($line = <$input>)
  {
      
      chomp $line;
    
      @field = split "," , $line;
    
      $names[$i] = $field[0];
   
      push (@{$data{$names[$i]}}, ($field[3], $field[4]));
    
      $i = $i + 1;
  }
   
  close $input;
   
  printf("%-8s %8s \t %s \n", "Name", "Percent", "Letter");
   
  foreach $key ( sort keys %data )
  {
     
      @value = @{$data{$key}};
   
      $total = 0;
    
      $possible = 0;
    
      $percent = 0;
    
      $i = 0;
    
      foreach $val (@value)
      {
          if($i % 2 == 0)
          {
              $total += $val;
          }
          
          else
          {
              $possible += $val;
          }
       
              $i += 1;
      
      }
  

  foreach $_ (keys %names) {
      $Homework=($total[$_ . "Homework"] / $possible[$_ . "Homework"]) * 0.10;
      $Lab =($total[$_ . "Lab"] / $possible[$_ . "Lab"]) * .30;
      $Final = ($total[$_ . "Final"] / $possible[$_ . "Final"]) * .15;
      $Quiz = ($total[$_ . "Quiz"] / $possible[$_ . "Quiz"]) * .40;
      $Survery = ($total[$_ . "Survey"] / $possible[$_ . "Survey"]) * .05;
      $percent = ($Homework + $Lab + $Final + $Quiz + $Survery) * 100;
   
      printf "%s\t%.2f\t", $_, $percent;
      if ($percent >= 90 && $percent <= 100) {
      print 'A';
      }
      elsif ($percent >= 80 && $percent < 90) {
      print 'B';
      }
      elsif ($percent >= 70 && $percent < 80) {
      print 'C';
      }
      elsif ($percent >= 60 && $percent < 70) {
      print 'D';
      }
      else {
      print 'E';
      }
      printf("%-8s %8.2f \t %4s\n", $key, $percent, $grade);
  }
  }

I keep getting syntax errors on the follow part of the code:


Code:
foreach $_ (keys %names) {
      $Homework=($total[$_ . "Homework"] / $possible[$_ . "Homework"]) * 0.10;
      $Lab =($total[$_ . "Lab"] / $possible[$_ .[$_ . "Lab"]) * .30;
      $Final = ($total[$_ . "Final"] / $possible[$_ . "Final"]) * .15;
      $Quiz = ($total[$_ . "Quiz"] / $possible[$_ . "Quiz"]) * .40;
      $Survery = ($total[$_ . "Survey"] / $possible[$_ . "Survey"]) * .05;
      $percent = ($Homework + $Lab + $Final + $Quiz + $Survery) * 100;


The only output I am getting is Name Percent Letter and none of the data from the csv file. Any tips?

Last edited by Scrutinizer; 1 Week Ago at 04:48 AM.. Reason: Quote tags -> code tags
This User Gave Thanks to Eric7giants For This Post:
# 2  
Dear Eric7giants,

Thanks for posting these programming challenges.

Cross language coding and lateral thinking is really important to increase cognitive skills and technical abilities.
This User Gave Thanks to Neo For This Post:
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