Compilare: main.cpp: In function 'int prefix_cuvant(Trie*, int)': main.cpp:52:49: warning: array subscript has type 'char' [-Wchar-subscripts] if (pos == (int)cuvant.size() || nod->fii[ch] == NULL) ^ main.cpp:54:37: warning: array subscript has type 'char' [-Wchar-subscripts] return prefix_cuvant(nod->fii[ch], pos + 1); ^ main.cpp: In function 'int aparitii_cuvant(Trie*, int)': main.cpp:63:20: warning: array subscript has type 'char' [-Wchar-subscripts] if (nod->fii[ch] != NULL) ^ main.cpp:64:43: warning: array subscript has type 'char' [-Wchar-subscripts] return aparitii_cuvant(nod->fii[ch], pos + 1); ^ main.cpp: In function 'int stergere_cuvant(Trie*, int)': main.cpp:74:41: warning: array subscript has type 'char' [-Wchar-subscripts] else if (stergere_cuvant(nod->fii[ch], pos + 1)) ^ main.cpp:77:20: warning: array subscript has type 'char' [-Wchar-subscripts] nod->fii[ch] = NULL; ^ main.cpp: In function 'void inserare_cuvant(Trie*, int)': main.cpp:99:20: warning: array subscript has type 'char' [-Wchar-subscripts] if (nod->fii[ch] == NULL) ^ main.cpp:101:20: warning: array subscript has type 'char' [-Wchar-subscripts] nod->fii[ch] = new Trie; ^ main.cpp:105:32: warning: array subscript has type 'char' [-Wchar-subscripts] inserare_cuvant(nod->fii[ch], pos + 1); ^