Compilare: main.cpp: In function 'void getexit()': main.cpp:138:41: warning: array subscript has type 'char' [-Wchar-subscripts] 138 | while (j != rad && j->v[ac->ch] == nullptr) | ~~~~^~ main.cpp:140:26: warning: array subscript has type 'char' [-Wchar-subscripts] 140 | if (j->v[ac->ch] != nullptr) | ~~~~^~ main.cpp:141:30: warning: array subscript has type 'char' [-Wchar-subscripts] 141 | j = j->v[ac->ch]; | ~~~~^~