. I- t' c5 u+ q) C7 g h. o) C定义一个Machine(Batch类型),和一个计数器nCounter(Integer型),machine输入规则:& [) O: j' ]6 v: s+ N. |; g; T
DIM midValue AS INTEGER: P- h6 u7 c. | R/ o9 v6 \; V! a
nCounter = nCounter + 16 x- x" O1 ^/ c
midValue = MOD(nCounter, 4) 5 T" e* F B1 u- N9 D; BIF midValue =1# p+ F! O0 m' i) V1 Z
PULL from A out of WORLD8 q [( V% ?$ g/ X5 l. F
ELSE 8 k/ N$ t. q: tPULL from B out of WORLD: d6 j' z3 _6 _
ENDIF