Untitled

call to constructor can be considered as function declaration?
//read all integer elements of the deque from standard input
std::deque<int> c((std::istream_iterator<int>(std::cin)),
(std::istream_iterator<int>()));

std::deque<int> c(std::istream_iterator<int>(std::cin),
std::istream_iterator<int>());

std::deque<int> c(std::istream_iterator<int>(std::cin), std::istream_iterator<int>());

std::deque<int> c(std::istream_iterator<int>(cin), std::istream_iterator<int>());

int ((((((a)))))) = 12345; // valid code!
a++; // the variable is named 'a'