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发表于 2012-11-13 08:48:12
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1判断语句
V, d% R: f: ?% _ if <condition> then
( p1 w4 b" v3 e" V <statement sequence1>;! o/ Z2 g) g. C
elseif <condition> then A& j% a& g- Z- w$ f
<statement sequence2>;
: p" x) z$ P0 ^) |4 ^$ s6 ]- y! C else
+ K% M W/ z& o# g: j <statement sequence3>;- H3 w& |1 _ c8 z# P& Q# ^. W
end;7 Q4 R2 N/ a R- K/ J) U1 V3 R n
如果分支比较多，用：' L- X+ B; g$ k) q7 F5 u
inspect <expression>- ~% b7 q7 i7 p- X, a
when <constant_list> then
W% ]3 S7 r R5 ` <statement sequence1>;
: K6 q$ f" Z# N! O4 o when <constant_list> then! M6 P5 _3 k# s- H0 i
<statement sequence2>;1 }; [8 P! G6 m! \% Y( W" |
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else; C0 m9 l! s3 |/ E% i7 n# @
<statement sequence3>;4 i% q$ @0 j2 \6 @- M3 [# s
end;: _) I- `3 R4 C: ~4 d% N6 q/ a* Z1 J
* i. o0 C/ `7 f6 j* b' I6 l2循环语句
0 @% v8 k7 j3 s; N$ l5 z; w- V (1) from <statement sequence1>
# }0 g9 v# ]$ m until <condition> loop% c5 r1 Z' c7 L
<statement sequence2>;
) q6 V: ?9 B7 W9 C7 [) ]$ r; q end; X$ t' h3 R: M _! Z
(2) while <condition> loop. |1 \7 [$ e# r/ N# j/ v5 y+ d
<statement sequence1>;
, m" M/ s7 V p- s# S3 R! p end;4 R+ B; W! _8 L, q/ |% q
(3) repeat
8 ^# L- j7 i( ^( A/ C1 f; p# o <statement sequence1>;
# t% O i' B3 J" \9 G until <condition>;! i5 k: N( O( O* P* j
(4) for <condition> to <condition> loop5 D+ W( Z1 z! A/ r6 G
<statement sequence1>;( Z: X% ^! ^% [$ c2 I% ?4 D
next;
# B8 E4 @6 {3 V# t4 L3中断语句
6 }% A1 R: @# s: h waituntil <condition> prio <integer expression>;
Q% S( Y; a$ V+ T+ c2 I# i7 }2 U( q& L. q* [! _2 y
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以上为常用的函数！, F s* }, E# H
还有很多，如有需要我把资料发到你邮箱里 . A5 ^* J/ K9 V
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