Illegal union question

[Jack Stephens]

The following declaration yeilds an "illegal member use" error
for both f and next under the compilers on both by PC and my 3B1 
and I can't seem to understand why.  Amybody feel pedegogical ?

jms

typedef struct m_i {
  int type;
	 union {
	 int (*f)();
	 struct m_i *next;
	 }
} menu[10];