Hi all, Little lost with this problem. I have an input file similar to 
18   56
25   10
12   45

[download]
First Column is called PDB second PIC. If i have a sumber stored in $NUM17 = 25. I need to make sure that $NUM17 appears in column one then print its corresponding PIC, column 2 number. I thought something along: 
while (<DATA>) {
($PDB, $PIC) = split (/\s+/, $_) if (/^\d+.*/);
               }
@pic = $PIC;
@pdb = $PDB;
$endpdb = scalar @pdb;

for ($count = 0; $count < $endpdb; count++;) {

if ($PDB == $NUM17)  {$value = $pic[$count]};

}

[download]
thanks, #print "$value\n";

In reply to Working with Arrays by Anonymous Monk

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