Compilare: main.cpp: In function 'automat* get_nod(automat*, std::__cxx11::basic_string<char>::iterator, std::__cxx11::basic_string<char>::iterator)': main.cpp:23:18: warning: array subscript has type 'char' [-Wchar-subscripts] if(nod->fiu[*it] == 0) ^ main.cpp:24:17: warning: array subscript has type 'char' [-Wchar-subscripts] nod->fiu[*it] = new automat; ^ main.cpp:25:30: warning: array subscript has type 'char' [-Wchar-subscripts] return get_nod(nod->fiu[*it], it + 1, stop); ^ main.cpp: In function 'int main()': main.cpp:78:53: warning: narrowing conversion of '(97 + i)' from 'int' to 'char' inside { } [-Wnarrowing] ad[nod->nr].push_back({nod->fiu[i]->nr, 'a' + i}); ~~~~^~~ main.cpp:80:57: warning: narrowing conversion of '(97 + i)' from 'int' to 'char' inside { } [-Wnarrowing] ad[nod->nr].push_back({nod->pi->fiu[i]->nr, 'a' + i}); ~~~~^~~ main.cpp:93:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < lista.size(); i++) ~~^~~~~~~~~~~~~~