Compilare: main.cpp: In function 'void trie_insert(trie*, char*)': main.cpp:34:23: warning: array subscript has type 'char' [-Wchar-subscripts] 34 | if (node -> e[ord[*s]] == NULL) | ^~ main.cpp:35:23: warning: array subscript has type 'char' [-Wchar-subscripts] 35 | node -> e[ord[*s]] = new trie(); | ^~ main.cpp:36:31: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | trie_insert(node -> e[ord[*s]], s + 1); | ^~ main.cpp:41:31: warning: array subscript has type 'char' [-Wchar-subscripts] 41 | if (node -> e[ord[mv[i]]] != NULL) | ~~~~^ main.cpp:42:38: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | val += node -> e[ord[mv[i]]] -> best; | ~~~~^ main.cpp:43:32: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | if (node -> e[ord[wmv[i]]] != NULL) | ~~~~~^ main.cpp:44:39: warning: array subscript has type 'char' [-Wchar-subscripts] 44 | val += node -> e[ord[wmv[i]]] -> cnt * w; | ~~~~~^ main.cpp: In function 'int main()': main.cpp:77:39: warning: array subscript has type 'char' [-Wchar-subscripts] 77 | if (node -> e[ord[mv[i]]] != NULL) | ~~~~^ main.cpp:78:46: warning: array subscript has type 'char' [-Wchar-subscripts] 78 | val += node -> e[ord[mv[i]]] -> best; | ~~~~^ main.cpp:79:40: warning: array subscript has type 'char' [-Wchar-subscripts] 79 | if (node -> e[ord[wmv[i]]] != NULL) | ~~~~~^ main.cpp:80:47: warning: array subscript has type 'char' [-Wchar-subscripts] 80 | val += node -> e[ord[wmv[i]]] -> cnt * w; | ~~~~~^ main.cpp:87:31: warning: array subscript has type 'char' [-Wchar-subscripts] 87 | if (node -> e[ord[bestmv]] != NULL) | ^~~~~~ main.cpp:88:38: warning: array subscript has type 'char' [-Wchar-subscripts] 88 | node = node -> e[ord[bestmv]]; | ^~~~~~ main.cpp:57:23: warning: variable 'ch' set but not used [-Wunused-but-set-variable] 57 | char s[NMAX + 1], ch; | ^~ main.cpp:72:18: warning: 'bestmv' may be used uninitialized in this function [-Wmaybe-uninitialized] 72 | char bestmv; | ^~~~~~