View Compilation Error

0_0_18239771_14568.cpp: In function 'void dfs(int)':
0_0_18239771_14568.cpp:31:41: error: 'typeof' was not declared in this scope
 #define ECH(it, A) for (typeof(A.begin()) it=A.begin(); it != A.end(); ++it)
                                         ^
0_0_18239771_14568.cpp:144:2: note: in expansion of macro 'ECH'
  ECH(it, a[curr].sons) dfs(*it);
  ^
0_0_18239771_14568.cpp:144:6: error: 'it' was not declared in this scope
  ECH(it, a[curr].sons) dfs(*it);
      ^
0_0_18239771_14568.cpp:31:57: note: in definition of macro 'ECH'
 #define ECH(it, A) for (typeof(A.begin()) it=A.begin(); it != A.end(); ++it)
                                                         ^