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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' Q0 }8 q! j( v; A, C' r& M
if <condition> then
8 L; t ?- K- G. } <statement sequence1>;1 C" F# e: S7 B* j3 `6 o f
elseif <condition> then
( j- ]2 x1 j) B/ ~- v <statement sequence2>;" g& I/ \" k2 b1 c
else ! G- A5 A0 @8 D6 ^
<statement sequence3>;# G1 M2 }3 o/ a6 Z# _; z. g; W
end;* k: `2 }4 I+ O, Q, ~
如果分支比较多,用:' J- B$ Y4 d. R
inspect <expression># \9 f1 A% C. A: } }. b9 K \
when <constant_list> then* b% r4 T$ L0 Q% |; Q
<statement sequence1>;
6 D" A1 l- L7 p- h$ j N when <constant_list> then
8 F, Q; R/ W9 E5 L <statement sequence2>;
8 x9 G( |1 P& H0 _; M ...
6 X# i. O, O$ o9 J' x( n else
+ h0 @) A/ J1 M. ? <statement sequence3>;
: A- A! }8 {4 m( @: A8 cend;
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3 p$ S* V) n# ~/ R! x% K2循环语句
$ _& p, L3 S' \ D (1) from <statement sequence1>
5 `, D+ Z+ w. C6 Y6 t" E until <condition> loop
' A1 c5 W1 \; [1 s4 } <statement sequence2>;- w! M- s: Y3 N* ]+ K/ u* W- ?) n1 v
end;- J7 Y0 g3 [/ v. Z- |' O
(2) while <condition> loop C3 S D# o) L1 m! |6 j
<statement sequence1>;5 h% V9 [! F3 {9 T5 A2 H; k
end; T; y7 Y3 { [8 @/ p0 H# P
(3) repeat . }" ~) p' m4 C0 t: c% }: w: c
<statement sequence1>;* R0 O! i+ W1 g: e* N
until <condition>;
5 m4 i4 X% L# L! Z (4) for <condition> to <condition> loop
: W( P1 u. p+ a$ ]) m* E <statement sequence1>;
( {9 y- j! r' \" V2 A2 M& x next;
8 _: u/ l% |1 `3中断语句' p1 b/ ^9 m& U" o8 p6 r
waituntil <condition> prio <integer expression>;
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以上为常用的函数!8 @* _8 r8 S# N0 j% E/ @6 ]
还有很多,如有需要我把资料发到你邮箱里 9 P a1 b: a, z: V1 r& k3 w
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