Compilare: main.cpp: In member function 'void RBtree::insert()': main.cpp:47:12: warning: unused variable 'i' [-Wunused-variable] int z,i=0; ^ main.cpp: In member function 'void RBtree::delfix(node*)': main.cpp:230:44: warning: statement has no effect [-Wunused-value] s->left->color=='b'; ~~~~~~~~~~~~~~^~~~~ main.cpp: In member function 'void RBtree::Afisare_Interval()': main.cpp:547:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<arr.size();i++) ~^~~~~~~~~~~