Compilare: user.cpp: In function ‘void StoreEncryptedWord(std::unordered_map<std::basic_string<char>, int>&, std::string)’: user.cpp:31:29: warning: NULL used in arithmetic [-Wpointer-arith] encryptedWords[word] == NULL ? encryptedWords[word] = 1 : ++encryptedWords[word]; ^ user.cpp: In function ‘void CitireInput()’: user.cpp:56:54: warning: NULL used in arithmetic [-Wpointer-arith] outputStream << ( encryptedWords[newWord] == NULL ? 0 : 1 ) << "\n"; ^