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发表于 2012-11-13 08:48:12
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1判断语句
9 C3 ~; V" Q4 u, f! G4 {- H if <condition> then7 l- ?- b* ?: C4 C! j
<statement sequence1>;
, ^! [$ h h$ \ elseif <condition> then
. g7 a: t2 y) v7 j6 `8 x: _# t- a <statement sequence2>;$ b( n6 ?0 \$ l* O; t+ k o" G/ r
else
/ p1 K& H P; r/ m8 _ <statement sequence3>;
* ?9 X$ i* {+ }. r X% N end;! |# ], A; K! @: L% f! c
如果分支比较多，用：% t8 j; h/ T, |# O8 i& s+ l
inspect <expression>0 E; w5 G- M' | q. _
when <constant_list> then
+ v2 @/ f4 G q; F3 y. q <statement sequence1>;
9 ?1 A) ~# B2 y2 \ when <constant_list> then
/ A7 x# r2 G, H <statement sequence2>;
$ P' E0 O1 `$ E- j; r ...
2 R% o$ Z Z9 `, n8 G3 G: r7 s0 _ else) C* p% H/ ?1 g# B% D6 e
<statement sequence3>;/ F, N5 _) ~6 E0 A7 s. ~& H
end;0 H: j9 Z- Z* ]2 ]
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2循环语句8 I+ b: M0 q6 }; a( X- P; S
(1) from <statement sequence1> q* a) u' h# D
until <condition> loop
1 |/ L/ i* y7 }' X! U8 S. A4 P& B9 q <statement sequence2>;7 V9 V) p, H/ s; q8 \
end;
$ S' n4 Y! v b% q$ u. P# M! D1 h (2) while <condition> loop
( q$ F6 _ K8 u/ w3 s: R# k <statement sequence1>;
/ y2 H$ X. U6 R1 @ end;
$ j7 h- p" @4 F% c0 x! b3 L (3) repeat ' T+ q' ]) h% ]2 p" _- z8 U
<statement sequence1>;& }" n$ p$ F2 p/ e3 T
until <condition>;
$ B% x1 Q# \1 K: B' I5 u% h0 O (4) for <condition> to <condition> loop
9 E2 Q; P) F' S3 L <statement sequence1>;
0 q7 b; U5 J/ C, {- g next;/ G2 w' O1 D0 j( i% ^
3中断语句
6 \# A) S m, K! u, I) P5 ^$ Z" | waituntil <condition> prio <integer expression>;/ `- Z0 v: s* s' `$ J" U
% S X7 l/ ^9 R
9 r) {4 T7 i$ q$ z: M; q+ E以上为常用的函数！, D- v3 S* `3 U: Q8 ^+ F
还有很多，如有需要我把资料发到你邮箱里 # @8 _1 c% ]: i/ P. u; w! w/ a
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