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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
# {/ X) u" b4 E% v+ K; r: [' l if <condition> then
# k- V5 \. {4 J <statement sequence1>;" E: |+ T# k/ @2 v& \# P h
elseif <condition> then8 D. B% d: M4 J; s0 i6 b, Q* v
<statement sequence2>;
! s# F5 z+ p. e1 L) ] else , a* w2 e2 n1 A V. Y& ~
<statement sequence3>;& l& b% J( P" o9 y2 S- Q
end;0 m* A6 }' E5 e( B3 q; f( ^
如果分支比较多，用：
3 ^- S- d; Z; v2 Z( s, @ inspect <expression>: R j, P7 W) `* M/ U3 @5 W
when <constant_list> then
" f& \" `+ C. g) u1 o <statement sequence1>;; F5 e9 r0 p% \* e
when <constant_list> then
! }" C+ f+ O1 j$ [. W4 T <statement sequence2>;
* j: c1 O2 S8 l/ Z% D, e ...
3 f( k' j" h; H8 t; {, y else
8 o' W, {$ e7 y/ G' n <statement sequence3>;9 H* U0 p4 `1 n/ r" Q$ m
end;' N9 o+ R/ V" H1 m
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2循环语句
, n3 g6 O0 m5 m5 b% F# N0 y (1) from <statement sequence1>4 {' F' n' C% {: T
until <condition> loop9 P: P {* d7 e
<statement sequence2>;! R. o- Z: z2 c L
end;
/ o$ ]1 d' X& ~' [. T (2) while <condition> loop
! Z1 K' N1 ?5 i' p <statement sequence1>;
; D5 b/ D' K9 K7 g end;" \5 G9 X. [: m3 P; A. G
(3) repeat 7 E- r1 @$ Y# j: y/ K4 }8 N
<statement sequence1>;
/ z$ A+ e7 H4 e7 k& |! T- t until <condition>;
( E- _0 I0 x: \2 S- K2 ?1 x. C (4) for <condition> to <condition> loop. h e- U e8 v( k G* F/ K i
<statement sequence1>;
8 @4 Z4 D" x4 k" ]) @ next;( [8 |/ P+ j& T7 M* M5 S4 g0 s0 Z# x
3中断语句, [/ R) E9 ?/ K/ T+ Y
waituntil <condition> prio <integer expression>;7 c# [( u3 q7 y8 g9 |
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以上为常用的函数！3 M5 q1 N+ z; L4 M) ] I3 d6 c
还有很多，如有需要我把资料发到你邮箱里 5 p) P% n% ^+ e4 I; D$ J
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