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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
6 ^! b0 \- o, g6 o0 u3 S if <condition> then" U) O. D. O' P0 t; K
<statement sequence1>;' P% G+ m$ k' I: Q* G) D- {
elseif <condition> then( t$ x! L. b. x5 ]. k ~4 L
<statement sequence2>;
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<statement sequence3>;- o- [5 V/ S6 T# f
end;
6 f; G. P" k" F9 S2 e* [6 K如果分支比较多,用:
' ~/ m; Z& J0 F+ n/ J. Q inspect <expression>
/ q4 R: d4 j- j3 R when <constant_list> then& M4 a$ E5 _! r& G" W
<statement sequence1>;
" P& D; ^3 q8 k when <constant_list> then
" M0 ?. n3 ~2 |4 s/ U( P& E <statement sequence2>;
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else
F! f' j8 o0 v2 y6 C, F4 w/ K <statement sequence3>;
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2循环语句% ^9 X0 P* m! K, i( O K( n! l
(1) from <statement sequence1>
% q9 g- d: G4 w. S' p until <condition> loop
% a) d$ u' j( U9 ]: B' ] <statement sequence2>;
: @8 T, U/ h$ L' u( e( z: `8 ]9 j end;+ Z# j% b. N$ @7 I0 e
(2) while <condition> loop) P, O' J2 ^4 c8 \, v% ~/ s' t
<statement sequence1>;
" {0 y6 T( x3 o+ o# c end;
8 A W) s" @, G/ E2 Q (3) repeat
5 E# d" A0 {; I+ I" x <statement sequence1>;1 o7 F# H* J& |: O4 k
until <condition>;
: g7 A' Y4 p+ [/ _ (4) for <condition> to <condition> loop, |' S3 o/ v+ K8 r0 s9 U
<statement sequence1>;4 k3 j4 b! d' }( }
next;- J# p& i! Q- H$ u1 ^+ ~0 R6 t2 t
3中断语句
+ d% p/ r( z. `2 F+ I, m waituntil <condition> prio <integer expression>;( {8 U& }6 e7 ^+ d
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4 |$ b+ m) Q! v以上为常用的函数!
! g! T0 N% R1 g. N0 l还有很多,如有需要我把资料发到你邮箱里 - |* ^. q. [! E! p; l8 _
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