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发表于 2012-11-13 08:48:12
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1判断语句% Z/ L/ v/ e( A1 _5 K
if <condition> then6 B/ d# }# C8 y' h7 p5 k. Z/ @6 ]1 L4 c
<statement sequence1>;
, V2 ~6 E g* T' e; s. S- ]8 U elseif <condition> then+ M3 Q$ e0 ?" I( b
<statement sequence2>;
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% A1 |- L% X2 c$ k9 c; m <statement sequence3>;; W1 s! w5 y2 B) h9 p* r
end;+ _3 A7 u" K3 Q) Q
如果分支比较多，用：
2 ]+ M! m, E% C' l$ ~# W# z( h inspect <expression>
8 t7 O6 |- o9 u- K when <constant_list> then! y2 k% U4 E5 W0 E& a. P# x
<statement sequence1>;6 h! ^ z0 [2 u* m7 p4 K6 a4 @
when <constant_list> then
2 Y' [" T, s6 D# K7 h4 X* h <statement sequence2>;
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else3 M5 O( n7 y" Q, O6 a7 ~
<statement sequence3>;
$ F" h1 L; O! y3 f4 i! Bend;
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7 x, Y/ d1 K0 \- p, |3 R$ @2循环语句
8 i8 Q2 o; e9 n/ @$ u (1) from <statement sequence1>, u# m# {. t5 T6 N- [
until <condition> loop. s: M) ]2 k, ^# }
<statement sequence2>;
9 h5 X, g2 `9 _- {7 Z8 U% ~ end;
0 Q- ` _, p6 i2 K: `& T (2) while <condition> loop
0 n+ B9 Y h6 Z, m <statement sequence1>;
) i( \& {& b M! c: }7 v6 y end;
: Y% M5 s! J+ H& O) Z (3) repeat - ?4 k+ S$ N5 |; e3 W$ b( P
<statement sequence1>;
3 G/ ^; Q( J; N/ M& v until <condition>;
; J& N Z* M% h+ W+ |( q2 n (4) for <condition> to <condition> loop8 M# J7 l7 k5 K) d0 c5 r M
<statement sequence1>;3 b% ?+ D) ~* ~
next;
~1 j y) }$ l$ D# ?( ^6 z! G- g: I; p3中断语句
9 {3 B1 m6 ^2 z) r. c4 k waituntil <condition> prio <integer expression>;" _3 p! \- }8 u$ f" P1 l( ^
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$ g9 Q3 S6 C7 K/ I8 i% M8 q, K7 ]以上为常用的函数！" j3 Z& l) \& s9 X0 M6 l
还有很多，如有需要我把资料发到你邮箱里 2 F8 S! g2 I6 q4 O! ~! Q
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