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发表于 2012-11-13 08:48:12
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1判断语句! }! [$ L0 O3 q) x) W, U
if <condition> then
2 F/ ^$ E7 a* W2 P: J$ { <statement sequence1>;! H4 T# s8 o. p
elseif <condition> then
' L- c& T) y7 s- `! S <statement sequence2>;. x# [& q F, [9 }
else
V3 S) |' x6 ?9 r( p <statement sequence3>;
! E1 n9 C6 m5 m/ \% ] end;' V) T* \8 Z+ A- V
如果分支比较多，用：+ u1 X3 M a& p5 z& O& ]
inspect <expression>
+ k0 }$ P8 x" L8 J4 ~* \ when <constant_list> then
- G' F# o4 J1 v$ I: I <statement sequence1>;
) C/ Z2 Z4 G( e when <constant_list> then
' }. _* G0 U5 @! M4 r6 U1 A3 q <statement sequence2>;5 e- k3 r! ^% H
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else
( g& ?# q# k- z: y <statement sequence3>;
1 b5 e F: G7 e3 \4 y/ j; a1 Lend;
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: w" n! g# H9 T, k2循环语句
7 r$ { S: ]/ z V( L' O$ _ (1) from <statement sequence1>8 l# A' _0 {- e) Y, Q: {7 i7 k3 b
until <condition> loop+ O9 ]$ o0 L4 L$ {
<statement sequence2>;
* X) P% O2 W) O, w4 v end;
8 U1 _$ I% T3 h9 W3 u5 H (2) while <condition> loop, K* \. K9 P3 f6 u( u
<statement sequence1>;2 @4 d1 I$ c% b, k6 o
end;; ^- m. Z8 K3 m t4 }9 r& z
(3) repeat / r ?' N6 P* |! R5 [
<statement sequence1>;6 h0 A; _# j$ P+ h& L; q3 ]
until <condition>;
2 }/ F( `( z( g l% x (4) for <condition> to <condition> loop
! c$ i$ F; R5 Y1 R5 l6 l# _) ^. H <statement sequence1>;
' W- X$ Q4 x |0 a+ C9 ^6 X! t3 X next;
/ x( [% w/ X7 p3中断语句
4 k; | Q8 l8 U waituntil <condition> prio <integer expression>;
3 Z6 z, ^2 D+ p+ L" W9 d4 d5 g. {. o9 {) \* W
5 x, h) i. h" r, v" y! o5 j0 `
以上为常用的函数！
6 C* E. K! z- ^% M还有很多，如有需要我把资料发到你邮箱里 0 H2 A2 t7 f! F3 U, |: d4 b
* l( F4 |; u& v$ X/ b
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