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发表于 2012-11-13 08:48:12
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1判断语句% q6 G0 S: a4 u/ N2 @% `% t, E
if <condition> then
6 @6 X8 ^' w9 [1 b/ n/ i5 Z& n <statement sequence1>;
: g0 ?. T+ B; ?% Y elseif <condition> then6 q+ F! c4 ]& U/ d \9 p
<statement sequence2>;
9 D0 }8 f4 n9 m! t( D# I- D else
/ N% V; E- E" k( r <statement sequence3>;
$ j( \/ O4 F. \: @$ l end;
Q" X( j- x. S! l+ }如果分支比较多，用：
6 B. u, V( K: [# ?" w- w9 k inspect <expression>6 N2 G' o% [" V* \1 Y1 `/ k- z
when <constant_list> then# \' L1 d: L- J- p
<statement sequence1>;
3 L4 g3 W$ o M2 b# E8 g when <constant_list> then8 X# o7 z3 C, N& `$ l9 K
<statement sequence2>;1 Y8 v8 l; C1 H6 U! Z; T% U, w
...
, S! t. s, Z" [ else
/ z( R0 A. ^. _* {% D <statement sequence3>;
) d' W$ v! O% t# F; n8 Lend;
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3 N4 W9 B6 v) v$ x2循环语句, |, [: r4 e6 v
(1) from <statement sequence1># l/ Y2 C& a. Q4 g- I0 f% r1 F- ~
until <condition> loop
) v- F, D4 x, E <statement sequence2>;
1 Q: g2 E/ X( j* }$ ~ end;
' B; @& X& z% g (2) while <condition> loop
* E8 [7 [1 V4 a) q <statement sequence1>;
7 r/ K2 x' {! V6 a$ T( D; i0 ?$ R- S end;9 ~& a+ I5 L: b I, R
(3) repeat 0 Z( p4 ^1 N9 e' C% }
<statement sequence1>;
5 N( ~4 P3 t3 A8 V8 c z until <condition>;
8 H: A7 i1 \0 \ u% e% {. o (4) for <condition> to <condition> loop
; H4 I, B5 ^' }) b <statement sequence1>;/ s) w1 o* @8 \$ ]6 R8 s D: z9 X. k
next;
0 D( x* { U7 Y% I# F; ? y# w3中断语句) R3 s5 S+ v& p3 }
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
% _1 l. T' q x. v: @, Z- k* y还有很多，如有需要我把资料发到你邮箱里 ; x- M7 u, R2 W" V/ E
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