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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
- _$ @/ e. a* Q% M if <condition> then+ u- C Y5 K8 X2 f: k6 G
<statement sequence1>;! e3 o4 _) A% l! h
elseif <condition> then
) H3 G! S+ q2 J" W" X- ^4 s <statement sequence2>;
_- Z: d+ o* G& p else . ~ O9 O8 Z$ C
<statement sequence3>;
9 }8 C" l0 ^2 ]* n) T4 B! x% h5 u end;( W3 e: E/ G0 \8 _9 V" X( L
如果分支比较多，用：
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when <constant_list> then
3 ?% }! x4 `. `% J4 k l/ s% a <statement sequence1>;
7 z6 W6 k& t+ E l; R4 n _ when <constant_list> then. k" i' a; R* z1 _
<statement sequence2>;
3 D" H1 L0 s: K) t ...
1 a: M% ]9 l# Y& A else
( b& ~' w+ ^# ~# y: R& T( ` <statement sequence3>;. P! K" z0 U9 D: }8 o5 x7 |
end;1 n% |& f/ P/ o& p/ ^3 b. t
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2循环语句
: _- I. V0 {0 B% _ (1) from <statement sequence1>
; N+ S' @- H& S until <condition> loop M9 U& B# V4 z. u
<statement sequence2>;
' G0 |3 R) k; Z0 j end;' y8 U5 g8 O$ c- K# m4 H# q
(2) while <condition> loop6 [. ?7 c9 v9 ?; d% ?6 w) b
<statement sequence1>;. D; V% x% N4 P' X% c* q G3 m& C
end;
$ m! W8 H4 k- T( H4 y+ e$ p" x (3) repeat # D/ ?0 c# A3 o2 e7 Y
<statement sequence1>;3 ^" ]- I3 C- p/ [5 L* k/ ^& Y
until <condition>;3 }8 u0 N1 B& O6 a$ i/ z
(4) for <condition> to <condition> loop
, M, j8 Q9 p, f) e( T <statement sequence1>;' Q7 J7 V m* s* q2 h
next;- M. v! M# S7 P: }1 }9 H6 c l9 e
3中断语句
5 c2 t, _" B9 L' r; G% W" Z8 J$ k waituntil <condition> prio <integer expression>;
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以上为常用的函数！1 F# |' s1 F: K4 M( F; l
还有很多，如有需要我把资料发到你邮箱里
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