Compilare: user.cpp: In function ‘bool cmp(art, art)’: user.cpp:18:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (C[a.c[i]] < C[b.c[i]]) return 1; ^ user.cpp:18:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (C[a.c[i]] < C[b.c[i]]) return 1; ^ user.cpp:19:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (C[a.c[i]] > C[b.c[i]]) return 0; ^ user.cpp:19:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (C[a.c[i]] > C[b.c[i]]) return 0; ^ user.cpp: In function ‘int main()’: user.cpp:32:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < V.size(); j++) ^ user.cpp:51:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] C[S[i]] = i + 1; ^ user.cpp:54:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < V.size(); i++) ^