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发表于 2012-11-13 08:48:12
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1判断语句 a# S. J3 I X: \9 d' Q, o
if <condition> then
0 t/ U2 ^4 a( |# H# @ <statement sequence1>;) p' H! l" E6 r, y0 f
elseif <condition> then* V" \4 }. Z9 L3 ] _) c1 m
<statement sequence2>;
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<statement sequence3>;
, r, b2 P# ?; a) z9 d. ~. M end;
) _- r0 c6 z L5 U9 l如果分支比较多，用：
6 U+ j! g' j& g$ P. e inspect <expression>
5 R$ Y) `1 g3 Q0 y when <constant_list> then
v" @( ], G+ j! u) ] <statement sequence1>;
* k" ^" y) r5 ? when <constant_list> then
) K/ g( `: l2 ]: K1 e6 w# K" x( k <statement sequence2>;- |4 @- Q; X7 l1 R
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else
$ ?7 A( [/ Q A# j; G( ?- N" W4 [ <statement sequence3>;
( g7 a, f6 t. B. send;
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: i5 d: g" ]# _( b1 T2 s2循环语句7 c$ z7 x( x. w0 j* L% V: Y* b
(1) from <statement sequence1>6 w& O( q1 X0 z" Z( K9 i. }$ G
until <condition> loop1 j8 `' r5 n: ^2 @, m! F. w
<statement sequence2>;
6 [# N, I6 v% o6 P* l# o end;
2 R& e) q8 U6 h5 J o (2) while <condition> loop/ Z( i# T" b9 `/ L
<statement sequence1>;
+ R+ X7 M3 G) }/ U! S end;
$ L9 R0 \+ a0 O. w (3) repeat
6 G5 ^" |3 ^' R <statement sequence1>;' i+ |+ R7 j- t0 N
until <condition>;
9 v9 X' [( K8 D4 c (4) for <condition> to <condition> loop4 w. J @, ^. G. {$ P- ?% d
<statement sequence1>;( F. k, d2 g9 ^4 J/ p6 D
next;
& h/ O- O. c) M5 j' y3中断语句
0 n: U# g. @7 C7 I' P( {! I; B' N waituntil <condition> prio <integer expression>;
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以上为常用的函数！
2 N+ e) ~, O/ x- r. o; ]- { F还有很多，如有需要我把资料发到你邮箱里 8 n' @* {$ d6 p
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