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发表于 2012-11-13 08:48:12
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1判断语句% p! Z: ~1 G3 ?7 @- w% d
if <condition> then9 Y7 \; O8 ]" x% A& p5 D" e
<statement sequence1>;
" b! }: ], U, P# i$ N elseif <condition> then
4 K+ \% m( _) ~8 j4 N <statement sequence2>;
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<statement sequence3>;: m, g% @9 e0 U
end;+ X7 l% n% {% K, W# o: `
如果分支比较多,用:
, A6 g5 H' d7 ~ inspect <expression>7 X( i& Z d/ p7 A* n
when <constant_list> then3 r7 `6 ^, B& j$ r3 c/ q
<statement sequence1>;
& }" B, i! U! f7 O e when <constant_list> then
$ k1 a! C3 H: E J L* E0 x <statement sequence2>;7 J, s' r9 M( o+ P+ d; @
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else& ]/ t. w8 H4 G% Q% A# t
<statement sequence3>;
2 C$ D5 l: t2 ?, v7 u8 j8 `end;* r' S, w& r# B7 Z4 ^! G2 ~8 A
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2循环语句: {3 |) C8 w3 u9 ~
(1) from <statement sequence1>
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<statement sequence2>;
" e& F' i+ ?2 q( Q' p end;
2 `3 w4 u0 z, a! g" D3 q& ` (2) while <condition> loop* U8 W2 _8 f# ^# P
<statement sequence1>;; {- M- s0 \. z" G
end;& e" ~/ l, w% q4 _; S
(3) repeat 8 k @" Y4 \' V
<statement sequence1>;) \& q( }7 ~1 y$ M7 J
until <condition>;6 H8 V. c. H* }) F% s! d
(4) for <condition> to <condition> loop4 O. m$ A) N; n* {& Q: r
<statement sequence1>;" q, V2 M2 p7 x- }' }' P
next;! B% O4 p1 B* }! \! c% y
3中断语句8 Z! ^9 J* y6 [5 D4 _7 j
waituntil <condition> prio <integer expression>;
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. E6 W- b4 P* _( i以上为常用的函数!
! F/ P8 F+ J& }$ W8 S- p/ e8 f+ I: h还有很多,如有需要我把资料发到你邮箱里
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