Compilare: user.cpp: In function ‘int main()’: user.cpp:11:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (fi>>c) s[c] = min(2,s[c]+1); ^ user.cpp:11:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (fi>>c) s[c] = min(2,s[c]+1); ^