Compilare: user.cpp: In function ‘int main()’: user.cpp:19:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[c]++; ^ user.cpp:20:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] v1[c]++; ^ user.cpp:25:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[a[i]]>0) ^ user.cpp:28:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[a[i]]--; ^ user.cpp:66:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v1[a[i]]>0) ^ user.cpp:69:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] v1[a[i]]--; ^