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发表于 2012-11-13 08:48:12
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1判断语句
* n. O) r) k! z if <condition> then
, [8 m- l, `5 g" j6 u! @; k <statement sequence1>;# h z% E v8 \5 ^; ]# E
elseif <condition> then
, E% w( q7 w: K! Y! J1 E3 g F( s <statement sequence2>;' T4 @( u) t$ ^) a4 l% Y* d
else
6 v+ g! J4 H1 Y) f- c7 H: K <statement sequence3>;
* H/ c$ P# K7 v/ s' Y2 w end;
2 l* b& e$ B; y* n3 b如果分支比较多，用：2 T! f. x3 r: J5 Y
inspect <expression>
8 E9 A% ?3 D; u7 R! n% T! m when <constant_list> then
* B3 e! f) H6 T) p$ N/ w0 w' t <statement sequence1>;/ p* e# V/ p: }0 H
when <constant_list> then' h U# W0 l5 o8 `5 n& {$ P; U ~) W
<statement sequence2>;! h2 m& u" w% ^2 V+ n0 o
...7 U! K/ T; L4 K, e0 S( v' f6 i
else
) O! N8 x2 W5 R <statement sequence3>;
% V, }; E. i, H/ r3 e+ r; a0 Tend;0 W# J. l7 [. ?) i
+ f# l. ]2 `( R: W: W( n* e2循环语句7 C' k. m0 S# @, e) ]2 x1 ?4 C: i. d1 ^
(1) from <statement sequence1>
C: P& H0 a. d( z* t until <condition> loop: Z3 z# U1 N8 r0 F' W" e, ]3 U
<statement sequence2>;
! x$ F! l2 F7 c& E' O, H end;
7 O+ ~: m' A8 p# T; b/ N (2) while <condition> loop2 c3 F' z: x. b8 ?3 v# @) w
<statement sequence1>;8 B6 E1 V$ ^ m. v) f( w
end;
" }1 j" D& n" I) f (3) repeat
$ c% ?1 Q7 j1 v7 r <statement sequence1>;
& |; f% O, c( ?' N( }: G( _ D! X until <condition>;: Y! t& l$ X5 X0 j
(4) for <condition> to <condition> loop/ b& D9 R5 R/ d, m) q" a
<statement sequence1>;/ }$ Q8 r; b- {) P1 Y& a
next;
( i7 S% ~5 f, v6 h' G3中断语句* v/ j( l- p' D9 F8 j
waituntil <condition> prio <integer expression>;* W' ^, Z; V* q7 Z, `7 ~
- n, o+ u4 O2 z% G
) P0 b7 z- o) P+ y/ X% z3 {以上为常用的函数！
8 I Y" [/ i R还有很多，如有需要我把资料发到你邮箱里
3 i# D! z7 v; X9 a
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5 e; Q; Q7 }2 h6 k f1 h5 [# Z2 `. ]( q% F) J% I! Q/ n: c0 U2 U- l
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% S' l; }1 F' | Y
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2 a! t' ~& i. d$ c/ f+ ~
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