Compilare: main.cpp: In function 'void adauga(const char*)': main.cpp:17:15: warning: array subscript has type 'char' [-Wchar-subscripts] if (n->urm[c] == NULL) ^ main.cpp:18:12: warning: array subscript has type 'char' [-Wchar-subscripts] n->urm[c] = new nod; ^ main.cpp:19:20: warning: array subscript has type 'char' [-Wchar-subscripts] nod* e = n->urm[c]; ^ main.cpp: In function 'void sterge(const char*)': main.cpp:32:20: warning: array subscript has type 'char' [-Wchar-subscripts] st.push(&n->urm[c]); ^ main.cpp:33:15: warning: array subscript has type 'char' [-Wchar-subscripts] n = n->urm[c]; ^ main.cpp: In function 'int aparitii(const char*)': main.cpp:51:15: warning: array subscript has type 'char' [-Wchar-subscripts] if (n->urm[c] == NULL) ^ main.cpp:53:15: warning: array subscript has type 'char' [-Wchar-subscripts] n = n->urm[c]; ^ main.cpp: In function 'int prefix(const char*)': main.cpp:63:15: warning: array subscript has type 'char' [-Wchar-subscripts] if (n->urm[c] == NULL) ^ main.cpp:66:15: warning: array subscript has type 'char' [-Wchar-subscripts] n = n->urm[c]; ^