I started to learn PERL from today...^^
So, my question will be very basic.
Below is my code which reads line-by-line from a file and calculate the sum of the 37th columns.
The problem is that the program doesn't execute "while" loop and directly prints "recv".
I don't know why. Please help me.
---------------------------------------------------------
#!/usr/bin/perl
                                                                      
+ 
my      $filename ="./multipath.tr";
my      @entry;
my      $size;
my      $sim_time;
my      $recv;
                                                                      
+ 
$recv = 0;
                                                                      
+ 
open(FILE, "<$filename") || die "file $filename can't open : $!";
                                                                      
+ 
while(<FILE>) {
        print "in while";
        @entry = split /\s+/;
        $size = @entry;
        print $size;
        print "\n";
        next unless ($size == 51);
        &get_throughput(@entry);
} 
                                                                      
+ 
sub get_throughput {
        my      $node_id;
        my      $end_point;
        my      $flow_id;
        my      $pkt_id;
        my      $pkt_size;
                                                                      
+ 
        if($entry[1] == "r") {
                 $sim_time  = $entry[3];
                 $node_id   = $entry[5];
                 $end_point = $entry[39];
                 $pkt_id    = $entry[41];
                 $pkt_size  = $entry[37];
                 $recv += $pkt_size;
        }
 }
                                                                      
+                                                                     
+    
close FILE;>
                                                                      
+ 
print $recv;
print "\n";

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In reply to What's wrong with my code? [from a beginner] by Wordlover

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