#includeIn the above example, we declare a deque of integers named `numbers` and add three elements to it using the `push_back()` function. We then use the `pop_front()` function to remove the first element from the deque, and print the remaining elements using a for-loop. Package library: STL (Standard Template Library)#include using namespace std; int main() { deque numbers; // Add elements to the deque numbers.push_back(10); numbers.push_back(20); numbers.push_back(30); // Remove the first element from the deque numbers.pop_front(); // Print the deque elements for (auto n : numbers) { cout << n << endl; } return 0; }