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发表于 2012-11-13 08:48:12
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1判断语句
C, e, E, D5 z v0 Q+ A if <condition> then
6 R: Q# b4 a) Z- {8 r4 _# }: X) d <statement sequence1>;6 r' E! a7 o" r9 K' l3 N8 Q
elseif <condition> then
. x& B, x7 F% h* T <statement sequence2>;
' \) E# A' ~5 u( ~2 ^4 {. S else
" j% P: E j$ ? <statement sequence3>;
/ a8 u3 e+ H6 ]0 o end;
8 |+ D; `; Z: K8 S3 a1 f如果分支比较多，用：
1 O& M6 N( D1 `- W! V4 O& Q inspect <expression>( E$ _: A, _" O
when <constant_list> then' n: O% `, |/ G' d
<statement sequence1>;) h$ V, e* t2 Q5 ?1 m. ?
when <constant_list> then
' `/ L, e% Q9 \9 a" N8 d" j <statement sequence2>;
* C% U! l1 v6 d' H1 x4 O$ L ...
: ]; r7 H/ H$ y! j" w9 [- R else
6 r; u( g8 O3 g6 ^# c- C2 E" L! R <statement sequence3>;
, T' o! K3 H3 C. [8 W! g" a! Wend;
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2循环语句' e8 c7 q* ^+ F* _
(1) from <statement sequence1>
6 v* c4 l! @: u5 s until <condition> loop9 `, W2 i4 ?/ z. }. h. r7 s
<statement sequence2>;
7 ?) W- J ?% ~9 O end;, D- x3 r. g' t4 I' u+ Y: _
(2) while <condition> loop
, Z7 Q5 f- _. {4 U <statement sequence1>;3 I* C) ?- S! v( P
end;# ?, T7 I. ]1 S2 M- f, }
(3) repeat 8 f$ L6 h% }4 j6 ~* [/ b' G' d% C
<statement sequence1>;
m& Z8 i+ }7 s$ ?2 }' n until <condition>;
; _) z) ]( u" Y8 ~, k' u (4) for <condition> to <condition> loop
0 m5 V/ b7 K4 R6 A <statement sequence1>;
b5 X8 j& u' {; o, Z next;" q5 f. B) l/ ]% R& @4 F( V
3中断语句" h' [2 A" e4 B. f/ ]1 N" x+ t
waituntil <condition> prio <integer expression>;3 V5 E" ]2 E t4 m
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以上为常用的函数！# |. k+ C- P& ]8 i
还有很多，如有需要我把资料发到你邮箱里 4 h7 D! n% m; Z) X6 ^+ o! V1 a9 h
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