Compilare: main.cpp: In member function 'void Nod::remove(int)': main.cpp:230:63: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index > 0 && children[index - 1]->keys.size() >= degree) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:234:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index != n && children[index + 1]->keys.size() >= degree) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp: In member function 'int BTree::Pred(int)': main.cpp:410:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pozitie < nod->keys.size() && elem < nod->keys[pozitie]) ~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int BTree::Succ(int)': main.cpp:439:13: warning: 'pozitie' may be used uninitialized in this function [-Wmaybe-uninitialized] int pozitie; ^~~~~~~