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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
" [6 J8 D% |3 a4 |% t1 U if <condition> then
3 t$ |6 G6 ^6 P3 L# ^ <statement sequence1>;
: M8 u! ]3 q% k. o6 _ O* d, O& J8 O elseif <condition> then: [! y3 c( R" C, ]9 e8 ~
<statement sequence2>;$ s* { I9 \8 ^" c L
else
( m3 s: i& o3 F# T3 e <statement sequence3>;
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如果分支比较多，用：
( X$ w* C" b. V, k; J; c inspect <expression>
+ h V. _: Z& o9 ~5 f _. _ when <constant_list> then7 G4 R& p( R6 t
<statement sequence1>;
4 Q2 S& [8 l5 v+ ]+ ^$ D when <constant_list> then( D. S7 }) S/ U2 d# V9 E% Z U
<statement sequence2>;
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else
4 l) r. _! F& e0 h <statement sequence3>;9 P) f, u: A5 ?6 _
end;; Z. r- i" [* F) ^9 }: Q2 ]
: G0 R0 A- w4 i. s2循环语句0 U# }% r! B& G
(1) from <statement sequence1>
6 X7 R0 `3 N- { P) ]- X$ o" } until <condition> loop/ l5 \7 o& Z( v
<statement sequence2>;
, X- Y" c0 ~6 c6 e7 D( u' @: ? end;: G; S Z. l& d
(2) while <condition> loop
& M$ T+ Z" h ^: p& @7 ? <statement sequence1>;
( E5 a* Y8 s/ J, P5 l# H. ] end;9 q' o2 M: D7 i" r$ n
(3) repeat $ `3 V, I9 y+ T) K: ^. j
<statement sequence1>;) x0 J/ d p/ E, {9 L- B& N8 W
until <condition>;+ d3 b0 U6 v4 U. O- ]4 ]$ I/ k
(4) for <condition> to <condition> loop
+ a7 H3 [$ \+ F <statement sequence1>;! |7 c$ }2 R( D2 h3 Q8 r* L
next;3 X' a8 z8 h7 M; U) V b- c
3中断语句6 F: z! \4 k" R9 ]- {0 i
waituntil <condition> prio <integer expression>;" t# x. ]4 V4 P F: @4 y
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! p; R- Q$ F+ c2 e/ f, C1 s以上为常用的函数！7 y, Q: y' ?' R8 _2 c
还有很多，如有需要我把资料发到你邮箱里
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