+ W5 t1 j/ n1 v: J- j定义一个Machine(Batch类型),和一个计数器nCounter(Integer型),machine输入规则: }/ i0 B$ T9 b J
DIM midValue AS INTEGER% O T1 u8 i2 @0 F4 U
nCounter = nCounter + 1- ?+ D& Y g" g! S4 `
midValue = MOD(nCounter, 4) 8 G3 ~' M! {2 S1 f2 y LIF midValue =1 & x! _) x4 a: I5 n) bPULL from A out of WORLD# F- R- y% o7 h$ q0 z9 ~( k
ELSE * R( [/ I, w. P. ]2 [5 D! j) p- xPULL from B out of WORLD( l9 L; |" p. U. X. ]4 J6 }
ENDIF