push( @array, sprintf( "%.5f", "$number\n") );

##</code><code>##

push( @array, (sprintf "%.5f"), "$number\n");

##</code><code>##

push @array, sprintf( "%.5f", $number) . "\n";

##</code><code>##

push @array, sprintf( "%.5f%s", $number, "\n");