Compilare: user.cpp: In function ‘void add_ch(char, nod*, nod*&, std::vector<nod*>&)’: user.cpp:55:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( ; p && !p->next[ch]; p = p->suffix){ ^ user.cpp:56:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] p->next[ch] = cur; } ^ user.cpp:60:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod *q = p->next[ch]; ^ user.cpp:71:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( ; p && p->next[ch] == q; p = p->suffix){ ^ user.cpp:72:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] p->next[ch] = clone; } } } ^