Compilare: user.cpp: In function ‘void addWord(int)’: user.cpp:28:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!it->next[nextCh]) it->next[nextCh] = new node(it, nextCh); ^ user.cpp:28:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!it->next[nextCh]) it->next[nextCh] = new node(it, nextCh); ^ user.cpp:29:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] it = it->next[nextCh]; ^ user.cpp: In function ‘node* go(Node, char)’: user.cpp:44:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(x->go[c]) return x->go[c]; ^ user.cpp:44:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(x->go[c]) return x->go[c]; ^ user.cpp:45:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(x->next[c]) return x->go[c] = x->next[c]; ^ user.cpp:45:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(x->next[c]) return x->go[c] = x->next[c]; ^ user.cpp:45:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(x->next[c]) return x->go[c] = x->next[c]; ^ user.cpp:46:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!x->tata) return x->go[c] = x; ^ user.cpp:47:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] return x->go[c] = go(getLink(x), c); ^ user.cpp: In function ‘int main()’: user.cpp:51:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("virus.in", "r", stdin); ^ user.cpp:52:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("virus.out", "w", stdout); ^ user.cpp:53:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %s", &l, &n, text); ^ user.cpp:55:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s", &l, s); ^