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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
' {; C. E$ N/ { if <condition> then
7 `- y$ a( b7 X8 e <statement sequence1>;
- I0 V- W5 f1 L/ p* c' ]: {! I/ v elseif <condition> then- ^8 H% h% v! P& z4 W7 m9 J' @
<statement sequence2>;( O# F8 P. f% J& Q# c
else
6 O. e% |8 Y- H( r% C! A" V <statement sequence3>;; P2 L0 Y' D- t0 q' q7 ]1 F
end; R& j- u4 I% d0 u, }. X
如果分支比较多，用：
% I) ^% g4 J& ~+ S' K8 y inspect <expression>2 e5 j! c( b, G- I; f
when <constant_list> then8 [* t+ G+ T% w/ J; ~4 ?
<statement sequence1>;
# y( v& x! E0 Y+ j when <constant_list> then' _) n% \; a; |4 E6 m7 i% w
<statement sequence2>;
/ r0 K( s: H) E% V* }8 h ...
) L( `0 p, _. C else
/ z( c* }! N" m# J) c, C <statement sequence3>;
" V3 L' B! r$ M% |; d$ D7 O# B6 f! Yend;
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2循环语句" E. q0 Y) V0 c' r8 a4 y# M: U
(1) from <statement sequence1>7 ?$ {8 _2 `; U9 x7 b
until <condition> loop5 N, I! [( N+ a2 j1 H
<statement sequence2>;) l0 V5 L1 r$ f2 V/ U" o* M6 p
end;
7 ^; ~1 M: [9 _, b9 J/ W (2) while <condition> loop C2 |! ^1 p% [; v6 @+ \2 P2 E3 z
<statement sequence1>;
7 p; O6 \- q W0 y& C end; Z$ b6 X8 o' s* c, C
(3) repeat
' g% ^2 f! v6 }% j/ \# a. H+ ^ <statement sequence1>;
. M5 B: T/ j$ [3 f until <condition>;' `5 L$ s: z7 W
(4) for <condition> to <condition> loop
* i* t0 {6 V3 [8 y <statement sequence1>;
9 v8 e# b$ b( y next;" V2 E5 a/ W k* q- c
3中断语句
+ o5 G; O( |$ ?" T/ e8 ~ waituntil <condition> prio <integer expression>;5 i }) v& E& S m+ f% j; x* Q5 d
( c. j% ?3 ?! v0 k) L
9 ~) x) `# R) P' W6 ?# B以上为常用的函数！
y; M$ y+ F; o5 I还有很多，如有需要我把资料发到你邮箱里 8 q( ~8 a/ S. f) F
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( s8 s7 `( \4 ]% }3 H2 e+ u+ f+ [
! u( A5 {# r9 i8 }$ f3 ?5 b
1 ?; {4 c7 b! s# @3 x# t2 q S6 g$ h: j8 X% r
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