Compilare: user.cpp: In function ‘void insert(Tr*, char*, int)’: user.cpp:36:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!t->fiu[*p]) ^ user.cpp:37:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] t->fiu[*p]=new Tr(); ^ user.cpp:38:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] insert(t->fiu[*p],p+1,poz+1); ^ user.cpp: In function ‘int main()’: user.cpp:63:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(kkt->fiu[s[i+j-1]]) ^ user.cpp:64:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] kkt=kkt->fiu[s[i+j-1]]; ^