Compilare: user.cpp: In function ‘int cmp(std::string, std::string)’: user.cpp:14:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[1]]<v[b[1]]) return 1; ^ user.cpp:14:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[1]]<v[b[1]]) return 1; ^ user.cpp:15:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[1]]>v[b[1]]) return 0; ^ user.cpp:15:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[1]]>v[b[1]]) return 0; ^ user.cpp:16:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[2]]<v[b[2]]) return 1; ^ user.cpp:16:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[2]]<v[b[2]]) return 1; ^ user.cpp:17:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[2]]>v[b[2]]) return 0; ^ user.cpp:17:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[2]]>v[b[2]]) return 0; ^ user.cpp:18:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[3]]<v[b[3]]) return 1; ^ user.cpp:18:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[3]]<v[b[3]]) return 1; ^ user.cpp:19:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[3]]>v[b[3]]) return 0; ^ user.cpp:19:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[3]]>v[b[3]]) return 0; ^ user.cpp:20:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[4]]<v[b[4]]) return 1; ^ user.cpp:20:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[4]]<v[b[4]]) return 1; ^ user.cpp:21:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[4]]>v[b[4]]) return 0; ^ user.cpp:21:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[4]]>v[b[4]]) return 0; ^