Compilare: user.cpp: In function ‘void insert(Tr*, char*)’: user.cpp:64:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!t->fiu[*p]) ^ user.cpp:65:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] t->fiu[*p]=new Tr(); ^ user.cpp:66:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] insert(t->fiu[*p],p+1); ^ user.cpp: In function ‘int find(Tr*, char*)’: user.cpp:72:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(t->fiu[*p]) ^ user.cpp:73:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] return find(t->fiu[*p],p+1); ^ user.cpp: In function ‘int main()’: user.cpp:88:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!viz[s[j]]) ^ user.cpp:89:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[s[j]]=++t; ^ user.cpp:90:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j]=viz[s[j]]; ^ user.cpp:104:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!viz[s[j]]) ^ user.cpp:105:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[s[j]]=++t; ^ user.cpp:106:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j]=viz[s[j]]; ^