Compilare: user.cpp: In function ‘void read(int*, int*)’: user.cpp:43:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(!good[c]) c = nextch(); ^ user.cpp:44:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(good[c]){ ^ user.cpp:45:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(good[c] == 1) v[++v[0]] = c - '0'; ^