Compilare: user.cpp: In function ‘int main()’: user.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < s.size(); j++){ ~~^~~~~~~~~~ user.cpp:74:40: warning: ‘coloana’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<dist<<" "<<linie<<" "<<coloana; ^ user.cpp:74:28: warning: ‘linie’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<dist<<" "<<linie<<" "<<coloana; ^~~