Compilare: user.cpp: In member function ‘int InputParser::getline(char*, int)’: user.cpp:132:17: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] str[lg] = NULL; ^ user.cpp: In function ‘int main()’: user.cpp:285:18: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] else fout << "-1" << '\n'; ^ user.cpp:266:21: warning: unused variable ‘x’ [-Wunused-variable] int n, cand, k, x; ^