What is the error message that you get when you use strict?

There is no sprint function in Perl, but there is a sprintf function in Perl.

The common approach is to predeclare your variables as lexical variables using the my keyword.

my $w = 3;
my $str = "abc";
my $line = sprintf "%${w}s ", $str; # still has an error

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Not knowing the error you got, after declaring your variable names, you will still get an error that you can't use 3 as a reference while strict is in effect. This is because Perl sees %${w} and interprets it as %{ ${ w }}, trying to interpret the value of $w as a reference. You can circumvent that problem by building your format string piecemeal:

my $line = sprintf "%" . $w . "s ", $str;

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In reply to Re: use of strict by Corion
in thread use of strict by geofflh

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