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发表于 2012-11-13 08:48:12
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1判断语句$ X r$ ?$ I6 @
if <condition> then
8 X: `+ \+ K3 V <statement sequence1>;
. M' H5 k( x5 g' O+ ]8 [+ P; N elseif <condition> then8 U3 J8 [- l7 |" v. O
<statement sequence2>;
/ _7 Z* G- _& w7 G7 } else 8 m8 G8 i/ W, h. x
<statement sequence3>;; m! n6 L, n0 _3 E2 C3 R9 |
end;& F- {" z! U) j# E5 ^" a
如果分支比较多，用：
7 E, k* ^' [5 p! |! K. @ inspect <expression>9 f" V) @1 m4 {6 I* r" W* F
when <constant_list> then
. T |" A I8 t( u) w9 C9 ~% J/ S <statement sequence1>;
" M& y4 r6 q9 \& g when <constant_list> then
! Z/ d. k2 r( B0 M6 I" P <statement sequence2>;
7 w" C$ L2 A* z1 B# { ...
3 n1 K3 v6 D; A else
1 v! b3 |8 s& Q; Y& j" R) a4 ~& {! l <statement sequence3>;; w$ `' q F' K1 ?# O0 [+ n5 T
end;
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2循环语句9 ^, s) x- \) [: P
(1) from <statement sequence1>5 P: c5 ]# K4 e/ t
until <condition> loop
# [. R9 `( y" J <statement sequence2>;
$ s# J( q$ C" [: `9 [ end;
; H( _6 Z T* w2 u W (2) while <condition> loop$ ]7 t: ~6 L1 l( ~2 o
<statement sequence1>;# j3 T& k4 S8 R4 o& s9 _% J4 [
end;: Z4 _* G7 I7 U. y: i
(3) repeat * e7 W$ e$ ?! F( d+ V a
<statement sequence1>;
. j4 F5 m. C, I [ until <condition>;4 g6 q% F/ Q7 @
(4) for <condition> to <condition> loop: }. B% W" {! Q+ m9 r% ]1 o
<statement sequence1>;3 K. G5 V) p H9 ~8 V- e
next;
; i+ B+ X: H, t% M3中断语句
/ Y3 G0 O% K9 J+ a+ \2 ?; f( P3 { waituntil <condition> prio <integer expression>;, L: U+ w/ v2 j8 G
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以上为常用的函数！' ^) n1 `6 r' B% |% |" C
还有很多，如有需要我把资料发到你邮箱里
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