Compilare: user.cpp: In function ‘int compareWords(std::vector<char>, std::vector<char>)’: user.cpp:45:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index = 0; index < firstWord.size(); ++index) { ^ user.cpp: In function ‘void tryLengths(int, int)’: user.cpp:79:73: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int positionInCode = 0, index = 1; positionInCode < wordCode.size(); ++positionInCode) { ^ user.cpp: In function ‘int main()’: user.cpp:142:14: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> word + 1; ^