jaffinito34:

You're treating $firstName as an array reference, but it's presumably a string. What you want to do is create a variable that holds the first initial, then you can print that. Something like this:

my $firstName = 'Marco';
my $firstInitial = substr($firstName, 0, 1);
print "First initial is '$firstInitial'\n";
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Read the documentation for substr to see how it works.

...roboticus

When your only tool is a hammer, all problems look like your thumb.