C++ Queue size() Function
C++ Queue size() function returns the number of queue elements. The number of elements in the queue is an actual representation of the size, and the size value is given by this function.
The function does not take any parameter, and it just returns the queue size.
The number of elements in the queue is returned. In other words, the size of the queue is given.
0.size: 0 1.size: 5 2.size: 4
Size of queue is 4
The complexity is constant.
The function accesses the container. By accessing the container the size of the queue is evaluates.
Guarantee as equivalent to the operations that are performed on the underlying container object is provided.