program in c to implement queue using linked list.
Queue is a container that is use to store objects.
It use principle of First In First Out.
A queue is a data structure where we add elements at the back and remove
elements from the front. In that way a queue is like “waiting in line”: the
first one to be added to the queue will be the first one to be removed from
the queue. This is also called a FIFO (First In First Out) data structure.
Queues are common in many applications. Common example are buffers for
network communication that temporarily store packets of data arriving on
a network port.