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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
% m- h" X% z' g/ I if <condition> then
, v7 b1 A) \4 Y) |/ S& J% o <statement sequence1>;
. \, J* F8 b P! \' [5 z/ x elseif <condition> then3 y; ]0 K9 o+ ~
<statement sequence2>;* y+ Z" _$ u+ J7 S- Z9 x' g6 N4 ]' r5 @
else
% |0 U( e5 K% [: P; H; I7 K. q7 C <statement sequence3>;
! ?2 o$ O0 I) y8 L end;4 o5 F" a$ h% B7 d) S* m' A
如果分支比较多，用：: v: z) X, ~' L, \5 L5 q. u
inspect <expression>
$ ?) V' ?% }" C! L' N: \+ ] when <constant_list> then
4 N4 _% _! _6 v# X. }/ \ <statement sequence1>;
$ E9 c* W+ @1 R when <constant_list> then
& [' S9 J2 ~8 @ <statement sequence2>;3 z0 ? ^! M' W
...$ X5 j* U2 \' h' p/ N
else
5 C. i5 z5 ]" ]1 _4 n* v! W7 H <statement sequence3>;
& _# }! ~: V/ @end;- K; L/ n# v2 D6 e" F8 ?; d
; ?5 c* `. R5 O. p6 c. j$ Z! E# C& R2循环语句
$ m8 Y% V9 }+ X) u' ?: B (1) from <statement sequence1>! w: t+ n( ~: _ v6 d. O2 p0 Y
until <condition> loop z8 k' }+ @2 [% r: y& i
<statement sequence2>;
; R4 o4 w* m6 K end;5 ?! y9 _- H4 h2 [7 G* A1 c+ Z
(2) while <condition> loop" Y1 E. J" o7 l5 R, u- b6 k+ W" e5 g
<statement sequence1>;
* |5 f. |' B2 @ end;4 t4 B" k9 D3 t/ E9 p# g
(3) repeat
" d; k% M& [7 [5 Q6 |7 @1 W! B <statement sequence1>;
; x0 {2 r. h4 R* } until <condition>;
; g, u4 w i" s) I (4) for <condition> to <condition> loop( {6 L a$ v# @" {
<statement sequence1>;
6 g' Y/ Q/ B! `. ]& F- ?9 ^4 q0 z! | next;( ?6 s% w3 |. ~( g. L' P6 g# Y
3中断语句
g8 L) _: v( D+ w/ D' S T/ g waituntil <condition> prio <integer expression>;' P3 H! R. b7 s( e
6 a8 L; D4 O7 |) h2 u5 Y# N! {2 X" t/ h- G8 P: g0 y( D
以上为常用的函数！
$ m8 M/ O* C' d# H1 T6 q( f; X, e8 F还有很多，如有需要我把资料发到你邮箱里 2 m' V+ ~* I% Y# O
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