Linked List

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>

typedef struct node {
        int data;
        struct node *next;
} node_t;

void insert(node_t *head, int data)
{
        node_t *new, *p;

        new = malloc(sizeof(node_t));
        if(new == NULL) {
    perror("memory can't be allocated");
    EXIT(EXIT_FAILURE);

        new->data = data;

        new->next = NULL;
        for(p = head; p->next != NULL; p = p->next)
    ;
        p->next = new;
}

void print_list(node_t *head)
{
        node_t *p = head;

        while(p->next != NULL) {
    p = p->next;
    fprintf(stdout, "(PID: %d) Memory: %p | Data = %d | Next: %p\n", getpid(), p, p->data, p->next);
        }
}

int main(void)
{
        node_t *head;
        pid_t pid;

        head = malloc(sizeof(node_t));
        if(new == NULL) {
    perror("memory can't be allocated");
    EXIT(EXIT_FAILURE);
        }

        head->next = NULL;
        head->data = 0;

        insert(head, 1);
        insert(head, 2);

        print_list(head);

        free(head);
        return EXIT_SUCCESS;
}