printf ("%-10s : %d\n", $foo, $bar[$i]) && ...;

##</code><code>##

(printf ("%-10s : %d\n", $foo, $bar[$i])) && ...;

##</code><code>##

printf (("%-10s : %d\n", $foo, $bar[$i]) && ...);

##</code><code>##

printf("%-10s : %d\n", $foo, $bar[$i]) && ...;
(printf "%-10s : %d\n", $foo, $bar[$i]) && ...;
(printf ("%-10s : %d\n", $foo, $bar[$i])) && ...;