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发表于 2012-11-13 08:48:12
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1判断语句9 M* q s7 }+ R7 u
if <condition> then
0 @5 n2 K7 X" l- r/ ? <statement sequence1>;
1 S6 B9 ` h& r" G7 G elseif <condition> then
, D0 q A5 o1 n) b <statement sequence2>;6 W/ a' q8 P% v( I$ [5 J
else
, z( @ A2 h# a4 N' O3 L6 b% R <statement sequence3>;
; a6 K" q; T: C8 N; Z% M end;: @, |0 r, ~4 P% S& \3 Q! w' z
如果分支比较多，用：+ u1 m6 s' U' [7 G7 R; j! @0 R
inspect <expression>! a: l: s0 G, R. |
when <constant_list> then
c6 h! h& d* |; z <statement sequence1>;
" t$ h# @- U8 Z: G D when <constant_list> then
- F3 D3 r8 B$ l1 Y* c( P/ l <statement sequence2>;' k+ q8 A+ @! Q+ u- d' J; I
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else
0 @/ e& Y$ d& o9 v! P; }* r <statement sequence3>;
4 T' n* A" Q5 }3 {; Dend;3 T- ^: u( e' z- H
9 l5 q8 S3 P: Y5 x9 Z4 e2循环语句$ S+ ^9 Y- ]8 K, C, R
(1) from <statement sequence1>
9 ~( A, t/ E7 q7 _0 @ until <condition> loop
) R5 O' t+ }5 `/ a' g5 F/ V' D- D/ X <statement sequence2>;! @; u% c8 t0 c) f9 ]# {" p9 M* p
end;
" ~+ W2 \. [% G; I (2) while <condition> loop; H( K+ k# D6 i; c" R* \" C7 D$ o6 R
<statement sequence1>;5 s! @8 O( \3 J( m
end;" S; l4 ?# @+ J; H, l
(3) repeat . e- {# p$ }4 D2 Y* Q" B2 P0 Q
<statement sequence1>;+ T7 Z" ]5 W1 u% w/ c* G( {
until <condition>;
8 d s! t7 A8 { (4) for <condition> to <condition> loop
6 A7 Y# L: j2 W, E8 f2 p" [1 H0 W& p <statement sequence1>;
# T: ?, v( Q# e9 o+ s; S1 L# X next;- |! \4 U' _4 @# R
3中断语句
3 `4 k: x2 |* [3 G* P: g waituntil <condition> prio <integer expression>;
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* w M6 \8 r1 Z5 W Z7 B1 X1 D: p" v以上为常用的函数！
' G9 T) ]2 x# n* k还有很多，如有需要我把资料发到你邮箱里 ' a4 h+ Y! G$ L. Q: C5 \
1 E9 `+ M- A" J9 J8 L* l( u3 {' t( W7 @6 {
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