sc/queue

Generic queue

Overview

• Type generic queue which grows when you add elements.
• Add/remove from head/tail is possible so it can be used as list, stack,
  queue, dequeue etc.

Usage

#include "sc_queue.h"

#include <stdio.h>

int main(int argc, char *argv[])
{
    int *queue;
    int elem;

    sc_queue_create(queue, 0);

    sc_queue_add_last(queue, 2);
    sc_queue_add_last(queue, 3);
    sc_queue_add_last(queue, 4);
    sc_queue_add_first(queue, 1);

    sc_queue_foreach (queue, elem) {
        printf("elem = [%d] \n", elem);
    }

    elem = sc_queue_del_last(queue);
    printf("Last element was : [%d] \n", elem);

    elem = sc_queue_del_first(queue);
    printf("First element was : [%d] \n", elem);

    sc_queue_destroy(queue);

    return 0;
}

Note

Queue pointer is not stable, it may change if it expands the memory. If you
pass the queue to another function which can add items, do it by passing
reference of the queue pointer.

void some_function_to_add_elems(long **q)
{
    sc_queue_add_last(*q, 500);
}

int main(int argc, char *argv[])
{
    long *q;

    sc_queue_create(q, 0);
    sc_queue_add_last(q, 300);
    
    some_function_to_add_elems(&q);
    sc_array_destroy(q);
}