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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
# |$ F. P! k4 w% Q if <condition> then* T! [9 K" [1 H0 S: ^; F
<statement sequence1>;; r6 x" d, U3 S, t: z* u9 ~+ _( v: G
elseif <condition> then: H! @1 o# F x5 T
<statement sequence2>;
7 M6 o: a2 t: F) |; B$ r else 8 e1 V) _. i) H' u
<statement sequence3>;" X0 G7 e* o9 ^, v; D; g
end;
" E8 d) ]* l5 t$ G/ l! {8 m8 h如果分支比较多，用：9 ^" v2 }4 ]& `/ j' a: d/ |
inspect <expression>
1 d. ~' J* {. @3 W when <constant_list> then
7 D% g. n! m4 y <statement sequence1>;
/ e5 |4 S1 l8 @" d( R* s) i when <constant_list> then U9 f2 c' B9 }$ E3 j
<statement sequence2>;
* l9 Z) _% w! @" r( h T. D ...
) Z0 n/ D2 U2 r else
/ n [3 H- Z0 _) ` <statement sequence3>;0 L- J6 S. G3 d; u9 r
end;$ c% V+ N+ q6 J k9 J/ I
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2循环语句8 q$ _+ C! v1 g- B& [) T
(1) from <statement sequence1>
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<statement sequence2>;. R1 O! s/ a* C# C$ l
end;6 g q9 I! y0 N; Z
(2) while <condition> loop. U+ Y9 }& b6 p R) S O4 M u
<statement sequence1>;" p: `4 u& M$ Q3 j0 H- I( ^7 G
end;
& @, ]* H: }! Z$ Z, _1 \. ? (3) repeat
6 G2 B0 m6 N3 n) X7 J+ H3 h8 C <statement sequence1>;$ K: J% U3 i6 e: U& R9 I
until <condition>;
; O7 z+ N7 B) n h% W (4) for <condition> to <condition> loop# Y2 l$ |) p4 k: Z( _
<statement sequence1>;# e/ ^* d u5 [/ @
next;5 Z# }9 J7 q2 E. ]. L* y7 t. ]
3中断语句
& l i3 v% B- `: b6 n8 k7 S waituntil <condition> prio <integer expression>;( h! u9 ` u% b7 l5 I" a
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: }/ y/ t8 P' q3 d' s3 V) G以上为常用的函数！6 z6 x5 p3 G# H. h2 I5 i3 M8 u
还有很多，如有需要我把资料发到你邮箱里 % A- [& m4 F' ]
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