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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! T$ M( z0 q# |3 v
if <condition> then# c2 U- l: {' ~. t# K
<statement sequence1>;
& z& s! j g7 ]6 m+ |; Z elseif <condition> then ` Q, G7 j! A9 E. H- a) s
<statement sequence2>;
! c! n3 d: i' y w4 o else 6 G! R% q- z# l& h, C
<statement sequence3>;8 E2 M9 z# b0 X' V; J( x, ?
end;
, I+ }" K# `4 @3 ~如果分支比较多，用：
5 E$ d/ \( v0 [9 H inspect <expression>
0 \+ o% o% p4 t' E when <constant_list> then8 ]$ ^1 m1 Y3 B; w, o9 {3 ~
<statement sequence1>;
6 m6 j6 S' h8 H3 z when <constant_list> then
) `. Z7 [7 V) P; s <statement sequence2>;
. K9 q. t6 @. N ...
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<statement sequence3>;
6 [& k. B2 m0 u# q. _( ]9 Zend;
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1 @: \0 m; p6 l D( ~% A2循环语句5 O" E* r7 R( l
(1) from <statement sequence1>
! T' I5 k1 t& j7 @- T1 g4 k until <condition> loop. O! z3 H; ?% c' Y
<statement sequence2>;, S' K9 N# `: C% ?
end;9 G6 [8 c3 u: L l, f
(2) while <condition> loop
$ L- I' L! z2 Q' q <statement sequence1>;/ k e1 j, J" }0 W* C
end;/ _! s% e: C0 y' ~: ?( L% }) R
(3) repeat
; v$ D7 Y9 x% ` <statement sequence1>;
* L# t6 @- k7 u. y: ^( G, B! f until <condition>;4 A5 u U' {! L$ ~' C
(4) for <condition> to <condition> loop: q9 f+ d) k4 K' U i) Q8 m% s
<statement sequence1>;
. C/ j! \4 A# O3 a# D& x next;$ d8 `, M/ o) d& g; i5 D
3中断语句! M, T) Q1 j# k8 n! |
waituntil <condition> prio <integer expression>; ? t$ R8 T9 H7 X5 u
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以上为常用的函数！, T9 |* {! @, ~' ~/ }$ V; Y
还有很多，如有需要我把资料发到你邮箱里 & V/ y6 N; y: T( g- s% N" ~
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