Compilare: main.cpp: In member function 'void redBlackTree::deletion(int)': main.cpp:519:13: warning: unused variable 'ok' [-Wunused-variable] int ok = 0; ^~ main.cpp: In instantiation of 'int abstractTree::lowerBound(nodType*, int) [with nodType = redBlackNode]': main.cpp:779:56: required from here main.cpp:251:18: 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:781:56: required from here main.cpp:233:18: warning: variable 'nodCurent' set but not used [-Wunused-but-set-variable] nodType* nodCurent; ^~~~~~~~~ main.cpp: In member function 'char redBlackNode::getCuloare()': main.cpp:383:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setCuloare(char)': main.cpp:390:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'redBlackNode* redBlackNode::getTata()': main.cpp:397:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setTata(redBlackNode*)': main.cpp:404:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'redBlackNode* redBlackNode::getFiu(int)': main.cpp:411:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setFiu(int, redBlackNode*)': main.cpp:421:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~