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发表于 2012-11-13 08:48:12
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1判断语句
: O! D+ g T: S& g! ^& a$ H4 h, z if <condition> then2 D1 C. _8 V* Q. @# V. }
<statement sequence1>;; {& o: Q% \# |$ F* G3 ~: y
elseif <condition> then( Z) z, G3 t1 k e# _
<statement sequence2>;* z) c# X6 e* D, {
else
: q/ t1 ?: e1 B4 Z- `; p <statement sequence3>;; x4 |$ L+ L4 |9 z( ], r
end;
, o2 X3 g! S+ a4 e9 y4 g% z) W7 _如果分支比较多，用： L/ f( _3 m% R- I0 w
inspect <expression>$ b* i2 | S* \. X
when <constant_list> then+ Z' K6 w i0 t' u' e; h4 w
<statement sequence1>;
- Z8 a b2 c! _ when <constant_list> then4 `& T# |& _0 E9 }, J4 e; H: l( V
<statement sequence2>;
* I5 [% S, [' I! b ...
x* l* o4 f) c7 r5 H9 l8 H0 \ else
2 b4 Y2 A3 G3 y# v6 P4 a: ` <statement sequence3>;
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# h) ^! V {' Z1 k, }: L6 w2循环语句3 l# Y& N! l8 v1 Z L
(1) from <statement sequence1>
+ s: s% Z" l B! e. G until <condition> loop
+ |* ^- u. E7 \2 O. h8 k0 A <statement sequence2>;
# [+ K) Z# Z- K end;% _$ a2 ~& \ L- g& h% N
(2) while <condition> loop
; ?/ q) n$ \0 V9 b: H, @# F2 w <statement sequence1>;6 ^: k7 B4 M; S. k# @) c. K
end;" q/ B5 Q4 P5 R
(3) repeat
1 [+ Q/ q- [ c7 w) | <statement sequence1>;
7 Q5 `/ T2 N, z2 m& [0 b until <condition>;3 \& e8 j" I1 ?# L$ k" h
(4) for <condition> to <condition> loop
: {0 S9 Y& J% v0 |; v <statement sequence1>;
! R9 h3 C6 \* K! W* n$ Q2 m3 R( J# } next;
. i4 V h7 r$ X3中断语句
0 ^5 H% p' l5 n3 V# b6 j waituntil <condition> prio <integer expression>;& B$ f6 _- Q5 R& n& B
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以上为常用的函数！. D5 |. J, ?9 ?1 N0 T( E6 T
还有很多，如有需要我把资料发到你邮箱里 7 w$ g: ^* \4 k9 F* H
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