1#define NONSTD_IMPLEMENTATION
 2#include "../nonstd.h"
 3
 4#include <stdio.h>
 5
 6typedef struct {
 7	int id;
 8	char *name;
 9} User;
10
11int main(void) {
12	// Initialize the arena
13	Arena a = arena_make();
14
15	// Allocate some structs
16	User *u1 = arena_alloc(&a, sizeof(User));
17	u1->id = 1;
18	// Use string builder for name, but we can't easily alloc string builder
19	// internal buffer on arena yet unless we make a custom allocator for it.
20	// For now, let's just use arena_alloc for a string.
21	char *name1 = arena_alloc(&a, 10);
22	strcpy(name1, "Alice");
23	u1->name = name1;
24
25	User *u2 = arena_alloc(&a, sizeof(User));
26	u2->id = 2;
27	char *name2 = arena_alloc(&a, 10);
28	strcpy(name2, "Bob");
29	u2->name = name2;
30
31	printf("User 1: %d, %s\n", u1->id, u1->name);
32	printf("User 2: %d, %s\n", u2->id, u2->name);
33
34	// Creating a linked list using arena
35	struct Node {
36		int val;
37		struct Node *next;
38	};
39
40	struct Node *head = NULL;
41	for (int i = 0; i < 5; i++) {
42		struct Node *node = arena_alloc(&a, sizeof(struct Node));
43		node->val = i;
44		node->next = head;
45		head = node;
46	}
47
48	printf("List: ");
49	for (struct Node *n = head; n; n = n->next) {
50		printf("%d ", n->val);
51	}
52	printf("\n");
53
54	// Free everything at once
55	arena_free(&a);
56	printf("Arena freed.\n");
57
58	return 0;
59}