Compilare: main.cpp: In instantiation of 'int abstractTree::lowerBound(nodType*, int) [with nodType = redBlackNode]': main.cpp:730:56: required from here main.cpp:242:18: warning: variable 'nodCurent' set but not used [-Wunused-but-set-variable] nodType* nodCurent; ^~~~~~~~~ main.cpp: In instantiation of 'int abstractTree::upperBound(nodType*, int) [with nodType = redBlackNode]': main.cpp:732:56: required from here main.cpp:224:18: warning: variable 'nodCurent' set but not used [-Wunused-but-set-variable] nodType* nodCurent; ^~~~~~~~~ main.cpp: In member function 'char redBlackNode::getCuloare()': main.cpp:375:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~