добавил файл с контеста

os_file_test (2).cpp

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include "os_file.h"
+
+//************************************************
+int my_create(int disk_size)
+{
+    return 1;
+}
+
+//************************************************
+int my_destroy()
+{
+    return 1;
+}
+
+void my_get_cur_dir(char* dst) {
+    strcpy(dst, "test");
+}
+
+void setup_file_manager(file_manager_t *fm) {
+    fm->create = my_create;
+    fm->destroy = my_destroy;
+    fm->get_cur_dir = my_get_cur_dir;
+}
+
+//************************************************
+//************************************************
+int main()
+{
+    file_manager_t fm;
+
+    setup_file_manager(&fm);
+    int result = fm.create(10);
+    result = fm.destroy();
+    return 0;
+}