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发表于 2012-11-13 08:48:12
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1判断语句
' Y: ]0 g/ p3 n F3 b if <condition> then# u/ ~/ a( q8 @
<statement sequence1>;
0 S, S. H; Z+ }- I elseif <condition> then6 ?4 Q% N9 y. r7 _$ s0 t: `
<statement sequence2>;; ~. r+ A5 W: Q9 J. E2 E- d
else / K4 }5 q% l* `+ I7 a
<statement sequence3>;; |- d/ i. V2 C' T: n
end;! C8 \* M Q* Z% b
如果分支比较多，用：8 E+ W& C. `) h c n" F/ l. k. B
inspect <expression>- Y& R/ T0 V4 D% S( ]# o9 C1 @. _
when <constant_list> then, h; n* |' i! ?
<statement sequence1>; D: L+ r- M4 z7 z/ R
when <constant_list> then
* C4 H" Z- S# N <statement sequence2>;6 _& _# f8 a5 c. [ J
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else1 B; s' P$ D# n
<statement sequence3>;
% s- r, ~) q! O" \8 jend;" z( O- ^+ f6 Y6 Q6 ]
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2循环语句# `) p( g( o1 {5 @$ n9 Q
(1) from <statement sequence1>/ I( r) j; U2 x+ \6 g: B1 b
until <condition> loop/ t1 e5 F+ e/ O6 ]
<statement sequence2>;
' k# D% i- ?3 L& E7 `5 O end;1 t' E0 _5 o1 ?( W! K4 f" T7 u
(2) while <condition> loop
# o7 h* E; P. V6 S9 D8 Z g <statement sequence1>;7 a& y$ f7 K8 U) ?/ E' P
end;) N" U( |/ |/ @7 m7 o, G0 }( T
(3) repeat
. A" a5 {' l |- T1 K <statement sequence1>;" g% i+ X/ ~: {- U, S8 M; j
until <condition>;: C8 u" L/ f& B
(4) for <condition> to <condition> loop
. |2 [9 ~/ w2 l' t, i- {7 C+ S& V <statement sequence1>;
* l5 w2 o! B* D/ F; q& {4 W- X3 ?, J; Q next;
V: f( c. F9 ]! G3中断语句& l# L+ N' ~% T- N3 ^0 @. ]5 \
waituntil <condition> prio <integer expression>;
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以上为常用的函数！. A) C/ O3 l' ^, o9 N
还有很多，如有需要我把资料发到你邮箱里
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