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发表于 2012-11-13 08:48:12
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1判断语句+ M+ M, }) \+ h P
if <condition> then
* ~8 {3 h& Z6 W: ^ <statement sequence1>;2 x. X$ C( M1 R5 t C
elseif <condition> then$ Q3 V; b) s" q, b' v# t- l& Z
<statement sequence2>;8 B# N' B/ r/ V
else
& G2 @2 G L9 F) @/ F <statement sequence3>;
0 y" @0 O+ [+ N- F6 p) b0 H end;
! w4 h( Y2 X$ F3 G: D如果分支比较多，用：
2 E1 s( w& \9 y inspect <expression>
& K# d: @) }# ~/ G when <constant_list> then
( J/ L5 F. ~/ m6 ]! I <statement sequence1>;
( Z! f% S4 \6 d ?% @ when <constant_list> then; k" c6 j8 y, G* ~3 U
<statement sequence2>;
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else. W% ^2 b8 q6 x! A& z; |1 K# Y6 x
<statement sequence3>;
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2循环语句
" ^2 l$ e0 v( g9 b+ O$ T (1) from <statement sequence1>" g* r1 i6 j3 d4 P4 ~5 f
until <condition> loop
4 F1 b; X6 ?' P+ |: q <statement sequence2>;
& [: J7 P6 |& S8 k" v& |5 D end;
$ y( E4 s$ J/ Q4 ` (2) while <condition> loop
4 V( |! b P' u7 b <statement sequence1>;3 J# \5 H" O8 j. _# L# w9 F+ c
end;& e$ R/ `* i) M6 T4 ?$ a+ ~
(3) repeat
; `0 [- m( E, K4 B5 ^0 k <statement sequence1>;" K8 p3 X9 I/ X _' A
until <condition>;5 o0 g$ n( y/ T8 F# Q
(4) for <condition> to <condition> loop) g. @/ |3 L2 T; ]( P0 u: O
<statement sequence1>;4 B9 V9 [6 L5 Z' M
next;6 Y" i" o# h. ^0 _& O0 @: x
3中断语句 }& A1 d( v9 _! u
waituntil <condition> prio <integer expression>;8 L* V* W( q% w6 ^4 N* L) ~
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以上为常用的函数！
: z/ h" U v) S4 p还有很多，如有需要我把资料发到你邮箱里 1 t3 T/ k2 ?4 N* C5 n$ V L; F2 s2 q
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