print (@array) . "\n";

##</code><code>##

(print(@array)) . "\n";

##</code><code>##

print (...) interpreted as function at - line 1.
Useless use of concatenation in void context at - line 1.

##</code><code>##

print @array, "\n";               # joined with ''
print "@array\n";                 # joined with $", ' ' by default
print join("\t", @array), "\n";   # joined with whatever you specify