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发表于 2012-11-13 08:48:12
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1判断语句
* W8 d7 O) O" g$ I4 K if <condition> then
) Y) s# |8 ?5 @) v2 J$ m, ^ <statement sequence1>;
9 K- T3 v- i. t Z" ~& V elseif <condition> then
: t) _$ f" q4 S' y4 |' ? <statement sequence2>;( Q" }( r& H1 V0 T. _8 z5 y
else
4 l; G# G0 H9 b+ v! K! z5 K <statement sequence3>;
) V) p4 E: U' } end;+ Q9 O+ B. H" }$ e) r+ G7 L- \) Y) i
如果分支比较多，用：
! T" {' _+ K8 u9 q& u# J inspect <expression>
9 g) b# d, V& T; E when <constant_list> then5 e, T0 n, K9 i6 ]: ~/ x
<statement sequence1>;3 m/ H4 i% [+ ?: M7 _) |
when <constant_list> then* c2 h+ x6 N5 S. @) N0 Q: b% O
<statement sequence2>;, @2 D2 ]- _: s& S/ Q* W: y! R
...
; {; g2 M1 x* _& |6 M& |4 k else
; C9 z2 N5 V% b9 a; Y2 v2 m2 [ <statement sequence3>;% {6 U. P+ \$ E! Z. Y
end;( p: U; f8 s8 p' [8 O0 p% D# c
@- M) {; z# N$ \, ]# |- f- H3 }! @3 A2循环语句& E' u, |3 z- A# t- F" u9 Y
(1) from <statement sequence1>
) q, k/ h' i# Y4 H4 e2 n# H( e+ l0 B until <condition> loop
9 O' j" X( t0 W <statement sequence2>;$ A {4 q* q$ G% Z8 p! S
end;
* Q q1 [& g" v; |2 G8 y% M (2) while <condition> loop
) M1 L7 C2 g! |8 v/ O <statement sequence1>;& ?& w! j( p) S. Y6 t3 r' e( O
end;
- g( @/ m9 W$ A0 d0 @1 O! N (3) repeat E2 a0 s. E( }$ u
<statement sequence1>;
+ @$ g# h c( ~+ y" Y" @! C until <condition>;
/ I7 b# f4 u/ y) }4 _# J# | (4) for <condition> to <condition> loop( g& w4 o1 _# y: g- l
<statement sequence1>;$ |: a3 t) [2 w$ y1 P
next; Y/ r5 M6 ^$ y6 _: }) P
3中断语句' F: u% I' M' T8 W
waituntil <condition> prio <integer expression>;
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3 c* u* u, R" |* m b3 A
以上为常用的函数！
3 X5 {. b* W: v. t4 c还有很多，如有需要我把资料发到你邮箱里
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