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发表于 2012-11-13 08:48:12
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1判断语句+ S1 E; I/ [0 }! I" a; U
if <condition> then
& F1 y$ V+ h# E' G* ~6 E2 ]* T) e <statement sequence1>;
4 U6 D; Y& s; z9 s+ o elseif <condition> then
* j+ Y2 ? } V! Y$ @5 E <statement sequence2>;5 H1 v4 s! [) B( n; L9 W
else 7 n6 y* K( ~+ }" o: s
<statement sequence3>;
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如果分支比较多，用：9 U3 h+ L' y/ P% b" H* Q6 ^
inspect <expression>
$ U) Y- f8 y8 f& a" N$ S when <constant_list> then, x; Z6 E, d: a( z; M# c
<statement sequence1>;. {( K9 Z$ | l3 D+ P
when <constant_list> then
- E U+ @8 j0 D! P <statement sequence2>;% w g. _6 A. k' \
...$ K2 c/ s1 k5 F" q- i' Z! k
else9 Z5 J/ [( n3 u- J& d$ n& E
<statement sequence3>;
; e( @" x. p2 p* mend;
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2循环语句+ \( ~) p" U1 [/ Q" j$ u [
(1) from <statement sequence1>
' [4 \3 y& S* ?/ d0 _( f2 r# R until <condition> loop7 q$ V" {1 N; V+ b% {2 Q7 z
<statement sequence2>;4 i' ~5 J2 I" r! U" @
end;; X/ t) E8 I7 C8 R( |( _* {
(2) while <condition> loop
/ d% G1 `% n4 ^$ |, n- v <statement sequence1>;
! g" B) \8 w9 u end; g$ y! W# x0 U& Q# B8 j: }% p
(3) repeat
. x/ |, \$ ~8 C" z# f+ ` <statement sequence1>;( x% i0 |/ @/ h% `, f% w: M* y. _
until <condition>;
! ? g/ J( k2 T9 }9 d (4) for <condition> to <condition> loop
9 m7 A* a- `$ l/ Q <statement sequence1>;3 ]9 ~1 x' h$ M
next;- z6 w6 g& v# Z* l8 W, k
3中断语句
7 K- @8 s; m2 c6 n waituntil <condition> prio <integer expression>;2 ]5 b: v1 J, S: h
2 v* J1 D. u# [) ^! {
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以上为常用的函数！ V; `' L+ f7 b4 Q
还有很多，如有需要我把资料发到你邮箱里 8 w- I' l, R1 _4 k
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