Perhaps the following will assist:
my $a = 9;
my $b = 5;
my $c = $a * $b;
my $dir = 'D:/B';
my $output = 'Result_File.txt';
## Create the folder B in D drive & Save results as Result_File.txt
# within B folder:
mkdir $dir or die $!;
open my $fh, '>', $dir . '/' . $output or die "Cannot open file '$outp
+ut'.\n"; # Line 10
print $fh "\n WELCOME! Product of 9 & 5 = $c\n\n";
- perltidy was used to reformat the script.
- As Athanasius suggested, mkdir was used to create the directory. Also, the file handle was closed.
- And as LanX suggested, a three-argument open was used (and perhaps you meant something like open (my $fh,">D:/B/$output") ... ).
Hope this helps!