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发表于 2012-11-13 08:48:12
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1判断语句
+ P: N! u/ i9 F" \6 Q if <condition> then
; C( i" r! C8 S( Z; p4 W <statement sequence1>;
* K6 R! z' T9 n( G$ R4 ^8 @ elseif <condition> then; h# N1 f8 \5 n9 k
<statement sequence2>;
4 O+ z5 ]' }* k: m else
A3 S% N* Q% t' ~7 R5 x7 x <statement sequence3>;
3 [. d/ R( X, d b end;
# l$ p% G& x5 K9 I' d" o0 u如果分支比较多，用：+ j7 T$ z& i9 m6 j R. ?, w2 c
inspect <expression>$ J5 f# Q& B4 X1 {
when <constant_list> then
3 K9 f1 K$ d8 T i <statement sequence1>;+ W' B' }, c; u' A
when <constant_list> then* u- `& }+ }2 Z
<statement sequence2>;3 i+ I+ E; k: t: }
...
# D5 D8 W$ E- ]/ h- L1 ^5 s' d else
- K( Q$ b& Z2 M# P& c. N# T# N4 A% X <statement sequence3>;
4 a6 t2 X; z8 {9 d4 u0 hend;
# a9 L) v" w, T9 @, i1 j
& v6 E+ h* A! ?4 t. m$ r$ ?, T2循环语句
" k, J* G5 i( G0 z3 ? (1) from <statement sequence1>! E* ? d5 V. U! ^0 l
until <condition> loop
8 s# s2 _# f' }- c% }& O <statement sequence2>;8 y4 B2 f K1 i3 v
end;! ]0 J$ ~1 P% I+ {6 x2 T9 X8 d
(2) while <condition> loop" m3 c. A9 C: W. t- i# V
<statement sequence1>;. l2 k3 A d2 h- L1 x
end;
% e& C, W: J( @7 a4 ` (3) repeat
# @* }* f; _# {; J4 ^9 x <statement sequence1>;! [) f1 B5 n/ m; u; O2 h3 G9 |4 w0 i
until <condition>;, W+ R+ g! r2 \2 G5 `1 @
(4) for <condition> to <condition> loop% ]2 p1 a% f9 h5 N9 T4 ?5 T$ d
<statement sequence1>;2 ~* Z0 Y: H5 g
next;/ W0 X" Q6 H h
3中断语句. M5 ?* l5 f1 L, y
waituntil <condition> prio <integer expression>;4 [- \6 R! A: N' a) `: Q- k+ f! q
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5 a; A8 D$ Q% f6 j- v4 N9 o以上为常用的函数！
- T% [4 ?, V$ b( [/ y W/ F: o还有很多，如有需要我把资料发到你邮箱里 4 s, i! `; w9 x0 H+ i7 S7 W: |3 E
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