Compilare: user.cpp: In function ‘void Insert_Trie(Trie*, char*, int, int)’: user.cpp:26:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fii[*s]==0) ^ user.cpp:27:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->fii[*s]=new Trie; ^ user.cpp:28:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] Insert_Trie(nod->fii[*s],s+1,lin,m); ^ user.cpp: In function ‘int main()’: user.cpp:50:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^