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发表于 2012-11-13 08:48:12
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1判断语句+ W+ j2 w, }, E- C
if <condition> then& f4 a7 l% b: ]' K8 Q
<statement sequence1>;9 B! t; T$ `' D5 H
elseif <condition> then, h `1 I) q# y5 W1 u8 m& s; |. w
<statement sequence2>;, I& X1 s0 c0 h6 l1 ?: x g9 I8 R
else
; z$ i; N( q* S, w) G/ J <statement sequence3>;
7 X. E5 y9 l1 _# `' P5 V( } end;
* e3 [$ Y+ v# b! D8 m如果分支比较多，用：
8 z* P- F# P- G; W, r inspect <expression>
5 J- ~8 H- J+ ?: i7 C0 _ when <constant_list> then
P9 g- T: S8 h) v <statement sequence1>;& z# R1 a3 x; O4 G+ N8 C% T
when <constant_list> then" v2 G5 M1 e9 `
<statement sequence2>;
) j2 f7 H8 O g% l1 M7 _# C3 K0 P ...
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<statement sequence3>;
6 D9 h& }- h+ P( [4 }end;
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' L2 U" v- {4 A& Y4 \2循环语句
2 k* j7 N# M5 h ] (1) from <statement sequence1>
7 u4 p: P. A3 v% f# j8 | until <condition> loop
; Z# }5 R' u; V9 R8 L y# q, }2 x <statement sequence2>;) O5 d: ]. {0 v& c& d' k/ w7 D
end;/ [) N2 j6 D/ S. u& v. e% B
(2) while <condition> loop
3 H4 _5 x9 z9 k5 S <statement sequence1>;
# j! y) @, L- l: c# n; [8 r end;
# I) I* D" j2 h- N2 p (3) repeat
: \6 U! ~" N" O4 R! L+ l5 A <statement sequence1>;
$ v$ x6 b8 w' r( C until <condition>; g# h9 Z3 e s; J
(4) for <condition> to <condition> loop
5 Z/ G) ^& C( W6 X <statement sequence1>;
2 M- n7 G+ P3 Q# I next;) L9 P' \) U3 l3 g
3中断语句
. N7 E5 l3 T+ I. ~4 X waituntil <condition> prio <integer expression>;
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; v- z6 z/ [$ U
以上为常用的函数！, C$ ]9 b" v3 Q: \/ Q
还有很多，如有需要我把资料发到你邮箱里 ! i4 I6 W, S- T" W; D
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