Compilare: user.cpp: In member function ‘void ahtree::search()’: user.cpp:90:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++ ord[index]; ^ user.cpp:98:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++ ord[failure ->index]; ^ user.cpp: In function ‘void search()’: user.cpp:133:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++ ord[now ->index]; ^ user.cpp:137:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++ ord[it ->index]; ^ user.cpp:125:13: warning: ‘now’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(now ->failure){ ^