Compilare: user.cpp: In function ‘void get_strips()’: user.cpp:56:33: warning: capture of variable ‘pts’ with non-automatic storage duration [enabled by default] sort(begin(srt), end(srt), [pts](int a, int b) { ^ user.cpp:47:13: note: ‘std::vector<Ptx> pts’ declared here vector<Ptx> pts; ^ user.cpp: In function ‘bool in(Ptx)’: user.cpp:83:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (line + msk < str[strip].size() && str[strip][line + msk] < arg) ^ user.cpp:91:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (line + 1 < str[strip].size() && str[strip][line + 1] == arg) ^