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发表于 2012-11-13 08:48:12
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1判断语句/ t: N* W0 Y' X7 ^" ~* d
if <condition> then. P$ w z/ M+ ^, h+ c
<statement sequence1>;
5 H- s$ e+ f: r5 f elseif <condition> then2 V5 e" G( W2 x3 ?
<statement sequence2>;
$ M) J' P. W: {# L+ [- c! a else ; B# [1 f" k9 b# i
<statement sequence3>;9 j6 n5 O1 s& {! J
end;
. r5 C; e, J6 [! r" T如果分支比较多，用：
; D: Z' p( z! T! Q% y7 K- O: d inspect <expression>
, w( s, e7 |0 e7 y# P2 @6 [ when <constant_list> then5 c6 e3 \8 @$ f) ?% c
<statement sequence1>;
+ D& o. k0 ?+ P7 _ when <constant_list> then
; b4 ^* Q3 p5 R; c6 ] <statement sequence2>;( J# V3 K2 w3 A o5 L
...
E4 j6 f7 b: c else' G8 f$ h% w, g8 N
<statement sequence3>;$ j# x# ^6 b$ P" `; D: k
end;$ g% T& B5 b5 E# G
$ H3 e- k6 }0 Y, I8 q: k! D Z2循环语句5 D/ H1 P- `! x, T* ] |
(1) from <statement sequence1>
/ W2 q$ E( N1 m" c7 u# z( j until <condition> loop
. q9 [/ ]8 g2 s# I5 n" c9 { <statement sequence2>;
+ }$ \7 f" ]4 l' M end;3 g" C. |, i8 }$ @# l0 Z
(2) while <condition> loop
8 N# d4 b; Y4 f <statement sequence1>;$ D& o7 p% h& Y0 v
end;& ~8 t6 q _+ L, S. v7 j
(3) repeat 2 v; k+ ~1 _# X m4 H2 O
<statement sequence1>;- J, g! c s( l( j/ G4 ^* `
until <condition>;7 g, j: h- w1 f- T0 c& }
(4) for <condition> to <condition> loop
/ s6 o# E \2 D# w: Q( b& W- |* A <statement sequence1>;
6 j) U% i! h0 i4 o# p+ `/ X; A! ^ next; N) i* R* n+ H
3中断语句
; [: t, s0 B' b ^! ?. V waituntil <condition> prio <integer expression>;
% T/ j0 @; |* B1 W8 C6 O7 p# ~; w' N9 P( Q% Z
5 r: G* Y' J- ]& C
以上为常用的函数！
- ^, r3 \2 ^) a4 R) o还有很多，如有需要我把资料发到你邮箱里 & \5 { J! W( M K! l7 e
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