Compilare: main.cpp: In member function 'void redBlackTree::deletion(int)': main.cpp:642:13: warning: unused variable 'ok' [-Wunused-variable] int ok = 0; ^~ main.cpp: In instantiation of 'int abstractTree::lowerBound(nodType*, int) [with nodType = redBlackNode]': main.cpp:784:56: required from here main.cpp:252:18: 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:786:56: required from here main.cpp:234:18: warning: variable 'nodCurent' set but not used [-Wunused-but-set-variable] nodType* nodCurent; ^~~~~~~~~ main.cpp: In member function 'char redBlackNode::getCuloare()': main.cpp:384:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setCuloare(char)': main.cpp:391:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'redBlackNode* redBlackNode::getTata()': main.cpp:398:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setTata(redBlackNode*)': main.cpp:405:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'redBlackNode* redBlackNode::getFiu(int)': main.cpp:412:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~ main.cpp: In member function 'void redBlackNode::setFiu(int, redBlackNode*)': main.cpp:422:5: warning: nonnull argument 'this' compared to NULL [-Wnonnull-compare] if ( this == nullptr ) ^~