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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
7 n4 a% X+ e C8 |# \( F0 w if <condition> then* o; |& u/ H) o* { p
<statement sequence1>;
& K. v. V. b k J+ z+ b elseif <condition> then1 h( F/ v4 ^4 p1 @5 M$ Q
<statement sequence2>;% Q1 e# ~+ s5 F/ ~4 l5 q
else
& q+ @) w& }/ O$ I+ e6 N8 v* I <statement sequence3>;
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如果分支比较多，用：
1 u& u, C" ?6 Y inspect <expression>
% l; w% E3 v! `* R9 S. h9 D) a when <constant_list> then+ i9 U$ f9 z! L+ f: g8 ~$ V/ T
<statement sequence1>;# P. F0 a, Q0 W8 ]' x
when <constant_list> then' J6 `1 b& G: Y7 V6 s- M
<statement sequence2>;: _" ]- l4 s" x/ ^
...
! v, E/ R% w, S7 E* O7 T7 R: T else
1 N# V9 T* }' _7 p <statement sequence3>;
0 p; O6 _3 ]( U6 u0 f+ P& yend;
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2循环语句
/ K8 z2 R* A) i6 L U+ q/ }3 b (1) from <statement sequence1>
' y9 J4 `% \9 J, H/ \- B until <condition> loop
. x o0 H/ T' R5 U1 k* | <statement sequence2>;
) H: M0 X$ h. D' _: T& [ end;5 F0 e! j- F n: f
(2) while <condition> loop1 L% E! y8 X9 Z- Y5 i
<statement sequence1>;
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(3) repeat . ^$ i1 @3 ^8 l5 J5 j" }* m
<statement sequence1>;
! ^* p6 W, W5 f; [* G% | until <condition>;
* ^' R! g9 U6 l( C% w0 `$ W; s3 ` (4) for <condition> to <condition> loop
5 [- N! J: A! @1 v% }8 V <statement sequence1>;
; {: n! K' F/ y4 @ g5 _9 p next;1 U) }4 s4 ^' O& z- P, b# g8 L
3中断语句7 b! I) P! U! n3 ]6 b2 G3 o2 E
waituntil <condition> prio <integer expression>;
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* V* a ~- N- L( z7 \- R/ y以上为常用的函数！
; I; D% L( Y9 p( W) `+ D2 U还有很多，如有需要我把资料发到你邮箱里 " V) c" {/ l E- Y, O5 f
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