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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
4 [' r' B# r4 ~4 V& L/ t if <condition> then7 {( p7 {0 Y6 x' R+ E9 n- @/ W2 a
<statement sequence1>;
6 l8 _0 ^* a3 { elseif <condition> then
: D" B1 F/ r% @5 a2 G! p <statement sequence2>; o' D) a) r) k% ^5 K- Z
else . o) e1 A c. C; g; }. N
<statement sequence3>;4 J- [6 d2 u" e; T9 P5 @
end;
3 s2 V0 j, ]6 x; K3 |' H如果分支比较多，用：
2 I P; X C+ I& @; F2 ]) u inspect <expression>
( Q R5 a, a6 G0 u. _4 k3 ` when <constant_list> then
: t$ t8 A0 W" ^( v4 f <statement sequence1>;
( Q/ t9 H6 k2 b when <constant_list> then/ ]- ?* y# Q* u
<statement sequence2>;5 R! R- D# l8 }, h( Q
...
+ j( Q# v$ N: B: ~/ r( J2 a7 m( X else1 U7 q0 ^) r, L" v1 \- K' S7 b! [
<statement sequence3>;
* s. ~: t% c$ y4 f1 m bend;
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2循环语句8 q- c+ ~# @5 S+ I) k7 _
(1) from <statement sequence1>/ L3 p! b& V" D0 l$ d7 S K
until <condition> loop
! q% q3 h: K9 k4 `/ [1 y <statement sequence2>;
* L3 b. q) }9 t: w end;
' [- H4 u9 r8 q: z# C2 R (2) while <condition> loop' h# U& a$ z7 ^& u
<statement sequence1>;
6 ^% q2 L# L' b4 B+ G' | end;: V( O3 A2 [& k; I- I
(3) repeat 9 l) L0 d1 v7 z0 t0 K- ^
<statement sequence1>;
' l- Z7 h) p& y. ]& I until <condition>;* V+ C! C/ e0 L2 e, M4 _) z
(4) for <condition> to <condition> loop- B0 X" e. h0 M8 A2 t. j3 R! @, b3 j4 g
<statement sequence1>;
$ P: j2 H0 s! o- q next;- V& E, \/ h/ }* O7 r* c% P
3中断语句
! \6 C% y9 B( Y: u3 c; n- W6 {' w waituntil <condition> prio <integer expression>;
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" N: U" l% t; F' o1 g3 _6 e以上为常用的函数！
. r3 s8 F" U- R0 `还有很多，如有需要我把资料发到你邮箱里 9 A7 `, z% M. l9 {& B& O- N
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