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发表于 2012-11-13 08:48:12
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1判断语句
! B. n( ^. o: u; b& |9 f- n if <condition> then0 r) i# A6 L. u
<statement sequence1>;
) ^, K. i2 s) `7 j* P: K elseif <condition> then- K, Z, v+ U3 T
<statement sequence2>;: Q/ w% B7 l# u" B' O
else
3 T; Q' u+ W' r <statement sequence3>;& s2 B5 H4 e6 k# A- [
end;
1 F- J' E9 Z2 J: L t0 R如果分支比较多，用：
( V5 [, [+ A' @9 Z% u, I$ {6 c$ _1 D inspect <expression>
8 i% \2 u' R1 E- ] H when <constant_list> then
- I! e; J6 c" y% }7 s# K <statement sequence1>;: P4 ?0 W0 `4 N7 ?) i
when <constant_list> then4 K7 Y X9 j% h5 {
<statement sequence2>;! o" m! q4 t" ^: i) f
...
1 f b8 @8 G. ~) ~ else
' }) i4 @1 j0 f3 K5 I0 m/ E1 Z' V8 i <statement sequence3>;
$ I! L9 a2 E0 g4 N3 V/ _3 ?5 }end;
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$ k0 ~7 a+ R# C2循环语句- i7 l0 b6 l9 [; u8 ?3 Q' F
(1) from <statement sequence1>
# C n' H/ z1 b+ H until <condition> loop& X6 ?. G+ E# a! {# m; ^
<statement sequence2>;/ j4 ]7 ?2 |3 D' I2 _; u
end;
: e3 I: Y) ]( W9 n* D. M (2) while <condition> loop, ] T( G4 S# N. V3 P9 E! ^+ o
<statement sequence1>;
+ V! [. D1 K6 C end;
% Q( t8 V7 J ?( ]) \$ j8 @ (3) repeat
+ Y( \" [8 O+ M' P( R9 K <statement sequence1>;; j p$ Y: O8 m4 g& c
until <condition>;! z- s8 I& V, I7 s6 @& e
(4) for <condition> to <condition> loop, `" U' F; V* p: W! F6 J
<statement sequence1>;5 \ S; A! G; M! i, Z
next;6 Z# z1 v( N( U- |% E- z( P$ t
3中断语句
2 {/ p$ X" h1 p! A; K waituntil <condition> prio <integer expression>;
* \6 A6 ?3 e. Y2 m& y
) q" Z: b8 ]/ S: p/ M1 E5 @/ ^
以上为常用的函数！
' A9 G# K9 \$ q, T6 ~# L还有很多，如有需要我把资料发到你邮箱里
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