C++ queue front() Function
C++ Queue front() function returns the value of the front element of the queue. The first element is the oldest element or the element which was initially added to the queue. The function is used to return that element.
The function does not take any parameter, it is only used to return the value of the oldest element or the element at the front end of the queue.
The function returns the front element of the queue.
newqueue.front() is modified to 44
The complexity of the function is constant.
The function accesses the container. The queue container as a whole is accessed, and then the element which is the oldest is returned.
Guarantee as equivalent to the operations that are performed on the underlying container object is provided.