Compilare: main.cpp: In function 'void lee()': main.cpp:27:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<s.size(); ++k){ ~^~~~~~~~~ main.cpp:33:26: warning: array subscript has type 'char' [-Wchar-subscripts] int ni = i + dx[s[k]]; ^ main.cpp:34:26: warning: array subscript has type 'char' [-Wchar-subscripts] int nj = j + dy[s[k]]; ^ main.cpp:38:20: warning: array subscript has type 'char' [-Wchar-subscripts] ni += dx[s[k]]; ^ main.cpp:39:20: warning: array subscript has type 'char' [-Wchar-subscripts] nj += dy[s[k]]; ^