Compilare: user.cpp: In function ‘void adauga(Node*, int, int, int, int, std::string&)’: user.cpp:51:93: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(node -> urm[letter] != NULL &&node -> urm[letter] -> Hash.size() >= wordIndex - 1) ^ user.cpp: In function ‘void cauta(Node*)’: user.cpp:70:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(node -> urm[0] -> Hash.size() == n) ^ user.cpp:80:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(node -> urm[1] -> Hash.size() == n) ^ user.cpp: In function ‘int main()’: user.cpp:111:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < word[i].size(); j++) ^