Compilare: user.cpp: In function ‘int main()’: user.cpp:19:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (s+v[a[k]]>w) ^ user.cpp:21:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] else s+=v[a[k]]; ^ user.cpp:27:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (s+3>w) s-=v[a[k--]]; ^