--- /dev/null
+#include <stdio.h>
+#include <threads.h>
+#include <atomic>
+
+std::atomic_int x;
+std::atomic_int y;
+
+static void a(void *obj)
+{
+ printf("x: %d\n", x.load(std::memory_order_relaxed));
+ y.store(1, std::memory_order_relaxed);
+}
+
+static void b(void *obj)
+{
+ printf("y: %d\n", y.load(std::memory_order_relaxed));
+ x.store(1, std::memory_order_relaxed);
+}
+
+int user_main(int argc, char **argv)
+{
+ thrd_t t1, t2;
+
+ atomic_init(&x, 0);
+ atomic_init(&y, 0);
+
+ printf("Main thread: creating 2 threads\n");
+ thrd_create(&t1, (thrd_start_t)&a, NULL);
+ thrd_create(&t2, (thrd_start_t)&b, NULL);
+
+ thrd_join(t1);
+ thrd_join(t2);
+ printf("Main thread is finished\n");
+
+ return 0;
+}