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发表于 2012-11-13 08:48:12
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1判断语句
* {9 K2 f7 A3 { if <condition> then
8 Q: A+ X( } b, v <statement sequence1>;
. T: Z/ O. i7 D. W elseif <condition> then% @* K0 a. C! t' X+ h2 L# c/ Q5 E' F
<statement sequence2>;. p: P& p4 u9 B- ]7 U7 ^
else
& r+ P. j: w' z5 a m <statement sequence3>;
" G6 z/ _$ V I5 u6 I, Z end;
1 q1 |) f! `6 K% w% u$ k如果分支比较多，用：
. e, @2 ?- q1 _) r$ \0 B' ~ inspect <expression>
7 h* @. d3 E: o2 u) f4 _ when <constant_list> then6 u5 J9 m/ p9 B/ A+ p
<statement sequence1>;
4 q! Z" I- | B, C1 a when <constant_list> then" [ o5 ~* n9 ]7 `4 k* ~
<statement sequence2>;
) X) ] P" M- Q1 P: k" _ ...
" s* y9 T) g4 }8 a/ r7 G/ I e; l else% Y, s ]) t7 N. v1 v- @# K7 B
<statement sequence3>;
* o, M0 ]6 Y4 F! Y E; r' J n5 Lend;
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6 N0 U6 y% X( D( Z. W2循环语句
" Q! l, Y: a5 M" N (1) from <statement sequence1>% A3 g3 \! \, O3 s) X. L
until <condition> loop
$ o% f( t) R) R, H/ N <statement sequence2>;: H+ f6 C# ]1 u
end;! a# C" `! n" ?; \* k
(2) while <condition> loop
* Q6 B0 W! r2 B4 w' p4 { <statement sequence1>;
" |4 ^8 c5 c3 C& m- t6 Q end;, _7 C& l# `2 C# N% d# H: [0 {
(3) repeat + ]2 G# s z+ [) O# ?2 D3 f
<statement sequence1>;8 R8 g0 s; s$ _2 P5 Y# O6 w
until <condition>;
$ u: ^/ ^& c' }& O, [( o" W" V6 { (4) for <condition> to <condition> loop
- v: h' U$ ]7 D9 n3 @- W <statement sequence1>;
$ }! {) ~( M' w- w5 n* [ next;1 Y/ ]) q1 D! ]& D% P' F b4 }
3中断语句
! k* @6 r+ D. i2 d4 K waituntil <condition> prio <integer expression>;# I( i R3 Y8 l1 k# ^- D
- x3 j' d0 S; u
( r2 J' r" C+ n) n" X以上为常用的函数！
, ^* M) w5 E; ]9 r0 g) t还有很多，如有需要我把资料发到你邮箱里 8 u6 M0 R+ a! @# h; T# V
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