#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

typedef struct _Node {
    int value;
    struct _Node* next;
} Node;

int main(int argc, char* argv[]) {
    // Create linked list of size 1
    Node* head = malloc(sizeof *head);
    *head = (Node) { .value = 5, .next = NULL };  // <= INITIALIZE struct on heap like this

    // Create another node.
    Node* next_node = malloc(sizeof *head);
    *next_node = (Node) { .value = 6, .next = NULL };

    // This is NOT connected as one linked list yet.
    // 
    // head        next_node
    //  ↓           ↓
    // [5|NULL]    [6|NULL]

    head -> next = next_node;

    printf("head -> value == %d\n", head -> value);
    printf("head -> next -> value == %d\n", head -> next -> value);

    return EXIT_SUCCESS;
}
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