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发表于 2012-11-13 08:48:12
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1判断语句
. c. I) I: Q" K1 _$ A# Y7 d if <condition> then
& G% V: |' l. ^& Z <statement sequence1>;; s1 R E% _7 ?8 X
elseif <condition> then
! W3 S! F) Q8 x( z" v- Y <statement sequence2>;
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<statement sequence3>;
4 ^, a- |6 |& [2 I8 D end;
3 I' |& q1 k9 Y, h! d7 H5 ?9 k如果分支比较多，用：
* J$ ~: W! u) D5 I. v inspect <expression>
5 f' z4 V( ]" |$ a6 x. M when <constant_list> then4 \) ^; B' q- f- } ^
<statement sequence1>;& ^* Q7 C) ^! t& U7 _) d
when <constant_list> then! C6 m) Q* @- z4 V6 t- L
<statement sequence2>;. |3 ]9 K8 t; k0 e4 e. h( ~- l* x
...
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<statement sequence3>;
1 e9 X5 a! E; r8 u6 R4 Z) g) dend;
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2循环语句
; U! ?8 s6 @7 _; w0 R (1) from <statement sequence1>
6 q% m$ Z5 w5 S z2 k until <condition> loop" e1 f* g! G7 K
<statement sequence2>;
2 |, @1 d; E% ^ c end;5 i. e; j) A- @ q& s5 R( A
(2) while <condition> loop
5 g' i I7 W; p: y6 k$ q9 o$ F <statement sequence1>;5 v% U# c- @; l/ i n% V1 W; }
end;
- Z! Q7 f# a. G9 N/ ~6 A (3) repeat
: [" Z' F9 x. Q0 t2 z @ <statement sequence1>;" L4 w9 n5 e$ G/ f* B* {
until <condition>;2 r- a: r- |" M$ K4 L8 W! S
(4) for <condition> to <condition> loop
0 y4 i% n- d5 _! C( r) J <statement sequence1>;
$ o0 P- T; ]; F4 w, V& F' o next;8 n- V+ ~/ t9 U+ N# z- v: a4 d& {
3中断语句3 o2 F0 Q9 Y, S$ |1 W
waituntil <condition> prio <integer expression>;& R5 ?& ^, y# z% q
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以上为常用的函数！& e) ^, p! e9 T, ]7 U) |+ d
还有很多，如有需要我把资料发到你邮箱里 _9 @! ^2 b5 O# I6 d$ X! @2 i
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