Compilare: main.cpp: In member function 'void RBtree::insert()': main.cpp:50:12: warning: unused variable 'i' [-Wunused-variable] int z,i=0; ^ main.cpp: In member function 'void RBtree::delfix(node*)': main.cpp:261:44: warning: statement has no effect [-Wunused-value] s->left->color=='b'; ~~~~~~~~~~~~~~^~~~~ main.cpp: In member function 'void RBtree::Succesor()': main.cpp:536:6: warning: unused variable 'gasit' [-Wunused-variable] int gasit=0; ^~~~~ main.cpp: In member function 'void RBtree::Predecesor()': main.cpp:569:6: warning: unused variable 'gasit' [-Wunused-variable] int gasit=0; ^~~~~ main.cpp: In function 'int main()': main.cpp:625:12: warning: variable 'log' set but not used [-Wunused-but-set-variable] int ch,log=0; ^~~