print_argu "Hello function!\n";
sub print_argu{
    print "@_\n";
}

[download]

Above code is not working for me, Then I put parentheses its working fine.But

 sub print_argu{
    print "@_\n";}
print_argu "Hello function!\n";

[download]

In the second code I called this function after the definition of the function, without parentheses, Is it the problem with calling the function?

In reply to function calling by vinoth.ree

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