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发表于 2012-11-13 08:48:12
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1判断语句- v4 f' S: Z2 |6 P' j1 ?8 i
if <condition> then; X) ^* j8 L: y: [- X# H, ^/ z
<statement sequence1>;
- L" l8 I9 }) ? |, p+ l. B3 y1 R/ Z+ N elseif <condition> then- b) V2 g& p# `
<statement sequence2>;
6 w/ U6 V! a' P% r% k# o. F else
8 x# D6 L4 ] r! p! C <statement sequence3>;9 D5 B' P7 b0 k# K
end;1 L# z7 \5 \; _% x6 o
如果分支比较多，用：
9 o% l4 D$ [4 B6 T1 K inspect <expression>
5 E+ p7 G6 y8 d+ x when <constant_list> then* m7 R3 } B9 U( E. A
<statement sequence1>;
& R! G- V) _* o; D7 W- m when <constant_list> then3 x) o7 M/ _7 n; M( u* ^" E
<statement sequence2>;
/ x' j$ W, Z# P- h- `5 X ...
! {( A* W1 V# p1 E8 A, K2 | else! _2 |. m5 b5 g9 T3 B2 Z E
<statement sequence3>;
! o3 d. W8 m8 W0 r- h% qend;( v8 |5 V. |& I% ^* S; N
3 E; p$ p) o3 B/ O9 t% G$ M# i2循环语句2 k8 o: c5 ^7 o' Z, e# X
(1) from <statement sequence1> G* X* [2 n; a# V, G
until <condition> loop% e" y" l- y2 q7 l# @- C, i
<statement sequence2>;) y! q( [" T! g$ l
end;, o, f7 a& x- U, Q7 s7 _
(2) while <condition> loop
* X, w; J: L7 M) [ <statement sequence1>;
5 k* t& H" ]8 Q, X7 Q- p, k end;
6 F0 p: J/ N; y% M7 U- r7 I( C# O (3) repeat
) g) U N( Y1 X l8 v <statement sequence1>;
& l9 ~& @* A0 Z2 M until <condition>;
# o5 R5 s3 M+ P/ f5 k, S (4) for <condition> to <condition> loop
' [+ D# h' T% N) p, g) n: n* M <statement sequence1>;3 s9 @* X! n7 k. \- j! D2 a
next;! [& m6 y- G2 `9 H' `
3中断语句
6 [) X0 d, Q% h& b' g _ waituntil <condition> prio <integer expression>;
6 ~; y9 L8 |0 ^; q: @; @
- A% o# z8 ^. G
9 j' N. E# J3 F8 @; `; U以上为常用的函数！
+ a' B& `% ]. w% y7 Y还有很多，如有需要我把资料发到你邮箱里 * T% x& R" F/ D1 B% w* Q5 c _+ r
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