Compilare: user.cpp: In function ‘int main()’: user.cpp:17:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if ( v[sir[strlen(sir)-1]] < v[(int)sir[0]]+1 ) ^ user.cpp:21:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] w[i]=v[sir[0]]+1; ^ user.cpp:22:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (Max<w[i]) ^ user.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (w[i]==Max-1&&s[i][x]==c) ^