Compilare: user.cpp: In function ‘void tquery(Trie*, char*)’: user.cpp:50:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[k++]='\0'; ^ user.cpp:55:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->nxt<=26) sol[k++]=nod->nxt+'a'; ^ user.cpp:56:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] else sol[k++]=nod->nxt-27+'A'; ^ user.cpp:80:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[k++]=next1+'A'; ^ user.cpp:85:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[k++]=next1+'a'; ^ user.cpp:90:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[k++]=next1+'a'; ^ user.cpp:95:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[k++]=next1+'A'; ^