Compilare: main.cpp: In constructor 'splay_tree::splay_tree()': main.cpp:16:8: warning: 'splay_tree::radacina' will be initialized after [-Wreorder] } *radacina; ^~~~~~~~ main.cpp:9:19: warning: 'long unsigned int splay_tree::size' [-Wreorder] unsigned long size; ^~~~ main.cpp:41:1: warning: when initialized here [-Wreorder] splay_tree::splay_tree() : radacina(nullptr), size(0) {} ^~~~~~~~~~