#includeThis is an example of how to use the std deque container. It creates a deque, inserts elements at both front and back using push_front() and push_back() methods, and then iterates over the container to print its elements. The std deque is part of the C++ Standard Template Library (STL) package.#include int main () { std::deque mydeque; mydeque.push_back(10); mydeque.push_back(20); mydeque.push_front(5); mydeque.push_front(2); for (auto it = mydeque.begin(); it != mydeque.end(); ++it) std::cout << ' ' << *it; std::cout << '\n'; return 0; }