Compilare: user.cpp: In function ‘void Insert_Trie(Trie*, char*)’: user.cpp:20:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fii[*cuv]==0) ^ user.cpp:21:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->fii[*cuv]=new Trie; ^ user.cpp:22:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] Insert_Trie(nod->fii[*cuv],cuv+1); ^ user.cpp: In function ‘char Find_Trie(Trie*, char*)’: user.cpp:33:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fii[*cuv]==0) ^ user.cpp:35:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] return Find_Trie(nod->fii[*cuv],cuv-1); ^ user.cpp: In function ‘int main()’: user.cpp:44:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&k); ^