10.2: Looking at the queue code

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We have already learned how to use linked lists, and how to use that concept in creating and managing a Stack. So, we wil take a look at the code for a Queue.

struct QNode { 
   int data; 
   QNode* next; 
};

This piece should look familiar. In the linked list we called it a Node, in the stack the example code called it a StackNode. It is simply a structure that contains our data and a pointer to the next item in the list/stack/queue.

Also - understand that the struct can contain multiple data types, it is not restricted to a single int. For example:

struct QNode { 
   int data;
   string fName;
   string lName;
   float cost; 
   QNode* next; 
};

When we use these data types we manage the first, next and last points (and any other pointers we need to manage).

Adapted from: "Queue – Linked List Implementation" by Gaurav Kumar is licensed under CC BY-SA 4.0