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发表于 2012-11-13 08:48:12
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1判断语句
1 ~2 I$ s O" E if <condition> then
( ^* r& p! }8 W4 n% H: o2 c% z" z <statement sequence1>;4 [& ?/ Q9 w* y1 n% `, a& u! h3 h
elseif <condition> then5 \" L' w' K9 ]+ t
<statement sequence2>;
3 n+ n6 e. m* p3 \ else 3 p9 [, [+ q! e: g! V2 H
<statement sequence3>;
; g' G P, F& `, w7 \ end;
- p g9 ]( D, {& u5 d如果分支比较多,用:
. q* l. {% [8 p! q* O inspect <expression>1 y% {3 m9 j3 x8 c
when <constant_list> then" N! `0 I6 o9 R4 a
<statement sequence1>;
; t r) c8 `2 s) ^& s4 J when <constant_list> then
3 c* l: E/ }; T& Z/ { <statement sequence2>;5 `5 [4 |1 R3 Y0 z( ]) w3 |; J9 S
...1 R0 f1 E6 a6 x- X, J) l( t
else! Q9 C* @0 l1 B3 ?2 {7 H
<statement sequence3>;
4 b& f8 I: e" d kend;: u" P" a/ t, {1 W: }
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2循环语句# a7 W* w+ d$ R! Z& M C
(1) from <statement sequence1>1 r- |' }0 c- l9 o
until <condition> loop
) E2 t; J- Z8 ?. n/ t! z <statement sequence2>;; g3 V6 i0 v0 V1 Q" g+ w! O# j
end; Z8 ]7 i) n. q0 w1 z; e1 d
(2) while <condition> loop* Q1 H' w' O/ L1 o. P! A* p
<statement sequence1>;
- d" T! ^# Q$ i, D- q end;
9 n* M0 x/ ]# P9 Z; V (3) repeat ) Y8 q' B! S; r1 V& x# k/ d8 T' E
<statement sequence1>;9 O1 X+ Z# v3 [- |! V9 @- T( g& b$ G
until <condition>;1 k! Y3 m/ c2 q% n
(4) for <condition> to <condition> loop
4 R; f- J$ A! U <statement sequence1>;
" A& v/ B5 \, H! X/ M& B" D next;
z$ @- f+ I0 I/ ^% y1 [3中断语句2 F$ Q0 D" N3 L+ I. B' i4 [
waituntil <condition> prio <integer expression>;) k4 |- y4 D5 r* W& m
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以上为常用的函数!5 _0 k. V8 _# O% g3 f+ [
还有很多,如有需要我把资料发到你邮箱里 1 q7 U6 C; K3 z6 Y: ]. X, X
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