網頁上給的Procedure的規格和sysio.h的有出入耶，
從助教寫的specification來看，似乎sysio.h的才是正確的?
hwk5.txt
The included file contains the definition of procedures.
ProcedureName():ReturnType ;
ProcedureName(Type1 ID1,Type2 ID2,..., TypeN IDN):ReturnType;
specification.pdf and sysio.h
ProcedureName(ID:Type1, ID:Type2, ..., ID:TypeN):ReturnType;[A