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发表于 2012-11-13 08:48:12
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1判断语句6 W" n* W% O v' ?' c8 T9 v9 _6 V- e% t! E
if <condition> then2 A7 l: M9 D0 t+ i
<statement sequence1>;% x% J4 U6 d |6 m! ]. M
elseif <condition> then% v1 }$ F5 m' }
<statement sequence2>;
7 {& r5 w. w$ d( n F1 y else
$ M( `! V+ w; C0 ?- _* V <statement sequence3>;/ r( L, {+ r( q
end;
/ Y3 r# p, s. i# W+ k$ U2 S# r$ n如果分支比较多，用：
5 I' j( m6 g: a8 {( y% T inspect <expression>
3 ~) J; O# ?0 ^# V8 K when <constant_list> then
9 Y" P' O" j0 ]: D o, C! G& X <statement sequence1>; M% B, b0 N) N6 a2 P- G
when <constant_list> then1 s3 U( H* @4 z5 a: i( |8 u
<statement sequence2>;8 _ ~4 A2 Q6 G; D
...
9 |0 o. G8 ?# _. W7 I else
E: N- }9 z% p0 S, b9 C6 K <statement sequence3>;* \9 m5 f$ B h3 |# n
end;& b# s' P* t8 C: O5 G. I7 `
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2循环语句$ O( X2 b0 _' \2 r. h/ G
(1) from <statement sequence1>' C8 Y" f: L. c& e$ U8 \4 r4 n
until <condition> loop
. e0 k6 v, i' A <statement sequence2>;, Q9 b5 e: X+ o! w
end;) L# M- u1 `/ h; g5 N
(2) while <condition> loop5 l) x; J \! F' h2 H
<statement sequence1>;% @6 ]4 F7 R6 h, w
end;
0 N5 n8 ~. L& v$ s (3) repeat * D' G" C7 K0 Y; @8 ~# S& s
<statement sequence1>;$ T! O- L2 c8 J; z$ s
until <condition>;
) {& f% j( g: s, C$ C' H+ D (4) for <condition> to <condition> loop) T+ e+ C7 Y, D$ v, J
<statement sequence1>;8 i# R; j7 S- a8 E
next;9 E( ]! |1 O# d% X
3中断语句
3 h0 C2 h% c6 J: \5 z$ G waituntil <condition> prio <integer expression>;+ s- d3 Q' k' ]3 J4 b
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以上为常用的函数！
4 _% }" L2 W2 Q" k: O' b还有很多，如有需要我把资料发到你邮箱里 - D- F( g6 n1 ?8 N0 U3 l! j
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