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发表于 2012-11-13 08:48:12
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1判断语句
8 W. |! e) Y8 d: _! m7 d5 x if <condition> then
6 C; h7 L: B* x8 I9 A: c$ y! e <statement sequence1>;
9 X! `6 b; x4 h" H% U: H* r elseif <condition> then: _* y# [6 A3 n3 P6 v; x0 P0 L
<statement sequence2>;; b8 \4 }# N8 Z1 K A( {
else 3 [& a. d& ?3 j9 W$ K
<statement sequence3>;! c7 H4 I j7 m+ Y2 q" @
end;3 l& z3 c5 G E7 s
如果分支比较多，用：
, m/ [; a3 i3 i" z( T6 ~ inspect <expression>
2 T/ o, a% o7 } m when <constant_list> then2 r) H' z9 C5 I" q: e( V
<statement sequence1>;3 m# I8 c7 B, ?8 R4 j
when <constant_list> then
8 J& |! P- e4 S- x% B <statement sequence2>;6 b. w* Y# f+ S1 K0 G% e
...
% X1 G2 T) D' O5 M2 e# T else
8 A2 z0 a5 P( I- g <statement sequence3>;& d- k- N/ P4 E
end;
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% f7 ?: E& c* U5 \( J2循环语句# X* S6 v5 C/ O! a; h9 h5 j
(1) from <statement sequence1>2 {) I* s* G7 x/ R$ J8 o
until <condition> loop& h7 m/ Y% l% p$ c! e9 N- k
<statement sequence2>;
. P/ \3 G) G+ y% C* F- n. k end;3 H" b1 M* [/ k( S' j+ _
(2) while <condition> loop
+ Y9 [* ~1 j; g: R! ?6 t! s% g <statement sequence1>;: p* _/ i- E8 j0 n: m
end;
/ K5 ?9 |: f% X0 g (3) repeat
* [4 [) [3 Z8 |# b <statement sequence1>;8 k$ h/ c4 B u# U& {- f2 V! a
until <condition>;3 W! G+ y V: N& j; u4 Y
(4) for <condition> to <condition> loop
* `0 @# v8 Z9 p/ P <statement sequence1>;6 H! s# \4 Z2 |
next;* r5 |1 D% z8 d- g- r5 ~1 }
3中断语句# Y. M, o% c( K( g) S) r
waituntil <condition> prio <integer expression>;8 R0 Z1 n/ u- w: K
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以上为常用的函数！
I/ p' v- R. d1 X还有很多，如有需要我把资料发到你邮箱里 * c. G2 F9 T# A
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