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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句- _6 s7 r8 b/ P
if <condition> then. ]" k" n% N( H0 H8 B
<statement sequence1>;; Y0 S; s y8 T
elseif <condition> then
4 ?5 F W5 P$ X* T <statement sequence2>;0 P9 O" E0 A2 ^( c/ p
else
2 M- Z% \2 _" w4 v3 y) [ <statement sequence3>;
& Z: \6 B* C' U2 x) s) e) t end;6 F# l$ [& q) S
如果分支比较多,用:" |1 H- g% N" n# ^7 b- Q* ?; y
inspect <expression>8 f; S& o- J% z; Q, X# [+ t6 H
when <constant_list> then2 l1 U: n* {2 Y9 Y& S# B" o3 ]
<statement sequence1>;
! M7 x) g l1 @ when <constant_list> then
, I' ~ n0 \. Z2 Z <statement sequence2>;$ C. U: M# a5 Z, X+ x p1 p
...( B t3 F# W# u4 U7 P* a) m
else
) F) L* k) Z2 o <statement sequence3>;
) Z* @7 d/ Q. j- {( p& oend;
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2循环语句
7 i: e0 X8 g5 J1 s$ |; v (1) from <statement sequence1>
- g+ R* x( ]2 a4 h1 I until <condition> loop
+ ]* N4 Z$ D4 l- W/ n <statement sequence2>;5 V- Q$ @# h9 w2 L- w/ f3 \) [
end;
3 x; s- X* ~- S* J (2) while <condition> loop3 N1 w) V& e z6 F/ n9 {/ m% F# M* g
<statement sequence1>;5 e& n+ c. }% ~9 O; q
end;& b: R; P( C" c) `( v
(3) repeat
& a0 w& v) o. B# ^1 d <statement sequence1>;
! Q; Q. p4 C7 B G' [3 ? until <condition>;; a# g. q. G1 f$ O7 v
(4) for <condition> to <condition> loop$ L7 ^3 m1 t7 h2 J& O' I; P
<statement sequence1>;
1 v) g7 E1 f; \7 \) a( [/ v# m next;
% Z- X$ w" B& c: n3 g7 A3中断语句/ T0 G5 P2 e! P" E
waituntil <condition> prio <integer expression>;# {! V% u: a+ y# Z: X
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以上为常用的函数!& I' `3 q; |% X: f$ b0 Q
还有很多,如有需要我把资料发到你邮箱里 0 `# d& ?7 A3 D a- w
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