Compilare: user.cpp: In function ‘void insert(Trie*, char*)’: user.cpp:53:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fiu[*p]!=NULL) ^ user.cpp:54:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] insert(nod->fiu[*p],p+1); ^ user.cpp:57:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->fiu[*p]=new Trie; ^ user.cpp:58:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] insert(nod->fiu[*p],p+1); ^ user.cpp: In function ‘int erase(Trie*, char*)’: user.cpp:76:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(erase(nod->fiu[*p],p+1)) ^ user.cpp:77:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->fiu[*p]=NULL; ^ user.cpp: In function ‘int pref(Trie*, char*, int)’: user.cpp:91:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fiu[*p]) ^ user.cpp:92:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return pref(nod->fiu[*p],p+1,x+1); ^ user.cpp: In function ‘int find(Trie*, char*)’: user.cpp:102:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->fiu[*p]) ^ user.cpp:103:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return find(nod->fiu[*p],p+1); ^