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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
/ n2 E; E$ s* K4 l+ ^( N if <condition> then
( W! U. }4 x2 q& j Q9 M <statement sequence1>;
2 T" q# o' q8 U1 v elseif <condition> then8 ]/ _: |9 T% b
<statement sequence2>;
& d) V- G6 @# Z6 d2 V8 A$ [ else
2 g- f! B( o7 k! D3 p3 V; P <statement sequence3>;
: r! |& M. Q/ }% V6 X0 Y( k end;
, v7 Q: `9 n! f如果分支比较多,用:
G+ [% v: s8 f7 u m; Y inspect <expression>8 b+ w( s" i6 S
when <constant_list> then) Z: I- C, a' z* f6 Y& s/ t
<statement sequence1>;- h( r7 c* t0 A+ Q1 r4 J
when <constant_list> then( R& ~0 k9 O& `
<statement sequence2>;
$ `! Z. F# o D# ` ...
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<statement sequence3>;6 e0 g8 X8 z! C7 ~% Z. J
end;
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/ @6 J0 h: B. z( a2循环语句
& G, f' v) ^' h2 c ^ (1) from <statement sequence1>
' I M& j2 R, W+ E until <condition> loop
& R6 J5 Z# c+ K$ ^ z: Z+ T1 p q <statement sequence2>;
& ~: Z9 U3 I+ n6 O, V) w p% N! @ end;
r8 z1 o+ d' y" `% O (2) while <condition> loop
0 d/ i0 W7 Z- P, a <statement sequence1>;
; z' a) z2 {9 ]& z end;
' O |* K0 O, N9 C (3) repeat 7 {- u* N! f6 `* V' [
<statement sequence1>;" l- N- a' ~$ [" E5 l( @
until <condition>;
+ j* q6 H/ B3 i. c& Z6 Z- o (4) for <condition> to <condition> loop
% V/ c; f& b& x+ I9 D4 { M7 S. J <statement sequence1>;
; K* L. r4 \( H$ A next;
3 \( K* y% ]1 c- ?6 W3中断语句% ?% p9 m$ i5 t0 U0 ~6 F
waituntil <condition> prio <integer expression>;
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以上为常用的函数!
6 M& u/ W7 _$ G: Y3 m还有很多,如有需要我把资料发到你邮箱里 ; n. v/ E3 Z1 |: |$ `* S
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