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发表于 2012-11-13 08:48:12
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1判断语句
: b; I- V- y9 U4 v2 j8 u( z& A" F J. ? if <condition> then
( `! { e# o6 [, G. |% i <statement sequence1>;2 e) O- |7 F. e" P# [
elseif <condition> then: h% [9 B/ H% r# O* r
<statement sequence2>;- ]9 I9 a1 E. z# Z M
else
v6 W6 C E! R- x7 i# B6 u( e5 R <statement sequence3>;
* n5 Q2 I0 Q/ {$ e, G/ p end;
2 j% j& O% d- B/ V. n如果分支比较多，用：
9 ?5 _* N# s A. \# [2 S% u inspect <expression>7 B7 o+ V9 n3 E, P$ r" X7 y! m
when <constant_list> then" y8 |5 n) g0 C7 [+ Z, t( P
<statement sequence1>;
0 Z/ n$ Z, T# _9 }* l when <constant_list> then
* L, ]3 W- N4 y5 o7 Y7 j <statement sequence2>;" c! I: H" ~" x8 n: L& g% X9 y" O
...# k, Z; A! l' \$ ?6 U8 y+ W- q
else
3 G1 n. B4 ], } r) q <statement sequence3>;
# b# a1 X- O' b, H! B/ b5 b! y6 |end;8 P h, l5 j( J1 j$ E& Z: @
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2循环语句2 f J' ^6 S. D+ Y
(1) from <statement sequence1>
: z) l, Q# E2 B$ D until <condition> loop
% |$ Y* E2 U" Q8 l! W <statement sequence2>;
1 u8 d" a0 O) P3 y! O4 q end;
, k( g3 \6 R4 Y4 z) K4 s, ~# ^* V (2) while <condition> loop! n4 m U& _* G( u
<statement sequence1>;
/ S/ N7 x' U, z! F6 s/ G7 s end;
( Q4 D% ^0 u3 W0 m% B (3) repeat ! c; C- _7 Z# Y# G; a
<statement sequence1>;
4 r# b: ^0 S& j# a0 D& ] until <condition>;0 l, Q! j0 w: a% c
(4) for <condition> to <condition> loop
7 {9 [ |6 T% Y5 B <statement sequence1>;; @% A" m% ]& u9 [
next;
Z6 p" j5 `- x2 {9 w3中断语句' h- W+ v! S% s+ ~' E/ b
waituntil <condition> prio <integer expression>;
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9 ~ I" }+ F# H+ B' x# z! ]; K% k6 w
4 V9 J" d( E6 i$ \以上为常用的函数！
. p5 h+ `5 L# P2 b还有很多，如有需要我把资料发到你邮箱里 & x! X) K o4 E1 p* m
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