Compilare: main.cpp: In member function 'void RBT::left_rotate(Node*)': main.cpp:301:12: warning: unused variable 'c' [-Wunused-variable] Node * c = y -> get_rchild(); ^ main.cpp: In member function 'void RBT::right_rotate(Node*)': main.cpp:327:12: warning: unused variable 'c' [-Wunused-variable] Node * c = x -> get_rchild(); ^ main.cpp: In member function 'void RBT::delete_val(int)': main.cpp:710:12: warning: unused variable 'parent' [-Wunused-variable] Node * parent = todel -> get_parent(); ^~~~~~ main.cpp: In member function 'void RBT::insert_node(Node*)': main.cpp:873:5: warning: 'side' may be used uninitialized in this function [-Wmaybe-uninitialized] if(side == 0) ^~ main.cpp:124:12: warning: 'parent_aux' may be used uninitialized in this function [-Wmaybe-uninitialized] parent = aux; ~~~~~~~^~~~~ main.cpp:844:12: note: 'parent_aux' was declared here Node * parent_aux; ^~~~~~~~~~