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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
4 c% P4 m+ A& E$ L2 Y if <condition> then
' ^, R* \. J9 r8 `# k <statement sequence1>;% C1 G0 ~2 V! z/ |
elseif <condition> then
* |) ~7 \3 I' F6 D0 G" g <statement sequence2>;
% R& M" ~& I; h$ ~" G else
5 f. v1 @; \6 b" Z0 E8 B, D <statement sequence3>;/ Q5 L) n9 X1 q; M1 m# W3 t2 I
end;
: [8 N1 ]' ]6 ?: C8 d0 {3 P Q+ h如果分支比较多，用：
2 U- o) J, r: Y: u0 s9 V1 D' L inspect <expression>
1 k( o. V. d7 h% I B+ C8 h5 l/ C when <constant_list> then# s1 o) ?( { w6 ^8 V1 j5 X6 O( l k
<statement sequence1>;
4 g, T: Y2 N) c+ q! S) ^ when <constant_list> then. c; S( ]$ _8 G P
<statement sequence2>;
8 J0 g0 H6 W$ t ]7 [ ?! a' n ...
& l" M' V. g; [ W( F else
" Z. q4 d9 I3 {* T3 r5 H6 V <statement sequence3>;5 C- G" D) c% \3 O v: l# J( M
end;
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5 e" M, j. `: h* J4 k2循环语句
( _. V2 | ^" ^/ S8 m, K (1) from <statement sequence1>0 v! A6 A. W: ~; N. G7 }, ^
until <condition> loop
- @0 u2 t4 x* ?' x7 ? <statement sequence2>;0 K# ~2 P7 I4 l* ?& h
end;
* ~' F" K" P: | (2) while <condition> loop, g+ Y. J2 T* V5 S E. M; H- [- ]$ l
<statement sequence1>;! ~& \+ T0 S# c$ E& B
end;
+ P7 n" y/ o( A (3) repeat
+ J- T; E* o( B- E: q5 g" Q <statement sequence1>;6 c' G3 ~5 C7 ^0 f( D, g p
until <condition>;- p* ]5 y7 V2 R+ C3 J5 O
(4) for <condition> to <condition> loop# S! P, ]. I$ m
<statement sequence1>;5 m5 O; u' N- v0 [) H# V
next;
3 \( t6 n9 h$ q# Z# L( d+ h' H3中断语句! C6 p2 _; b: M; s X
waituntil <condition> prio <integer expression>;
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- q& t0 J* f! n! K }" J( o/ l; N以上为常用的函数！
" P N3 G, y, O还有很多，如有需要我把资料发到你邮箱里 1 Z; K$ z7 e4 i5 g* m |& U x
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