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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 r% s, ?; n* U& L! J3 ~/ x if <condition> then
! U7 N3 O$ N* _: e$ [* s) v <statement sequence1>;4 P4 k$ c4 R- d" l2 r' _
elseif <condition> then
) z% [) D' k8 g. a! s <statement sequence2>;
/ d3 b4 T8 i9 U6 S& k else
9 O3 k3 ^+ \! Y- \- | K% _ <statement sequence3>; K" y g# Q7 A( n
end;2 E- T9 z6 \' f- w
如果分支比较多,用:
2 V2 V5 }) e) i& h' P+ S9 ` inspect <expression>
1 W! N5 ?2 S& Q6 J7 f+ g when <constant_list> then
* `- f0 t Y+ C& J& B <statement sequence1>;' N) U# d/ i C' V" }) L1 A! k
when <constant_list> then
$ [" r2 k8 u: Q' S+ }" E <statement sequence2>;+ M! F& i: W6 [5 Y X/ {3 k- z
...
. K7 D( q% b5 U. V. v' A4 d else
2 a2 g- w9 |. q- K3 \5 h; c/ D# o <statement sequence3>;( n& c+ n( f6 e" E$ w
end;: {3 A6 y3 S! I4 t& P
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2循环语句5 l% A( y! j8 ]& z; x
(1) from <statement sequence1>
% [$ m# G1 w* \ until <condition> loop
9 m' S( g9 y' p0 ?' j <statement sequence2>;
' x8 D, I$ B7 l* [2 j end;5 C/ X5 r' Q S6 l
(2) while <condition> loop
) z8 f7 O ]* n <statement sequence1>;2 [) d; v) b. f# |% y' t
end;4 |; a2 Z! s( S2 Y. w* a
(3) repeat
2 z: M! n8 B5 m* |5 O H <statement sequence1>;% m8 o1 u% U9 E2 s6 X5 Z+ f- t8 |( t, t
until <condition>;
' p' r0 {6 s7 V0 {1 p (4) for <condition> to <condition> loop
- U) x @ u) U <statement sequence1>;5 {: h# N/ c3 u- f- q& F
next;
- G0 B9 o. @1 n1 u5 ]3中断语句: f+ v3 ]& m( J7 M9 I
waituntil <condition> prio <integer expression>;
8 E9 r5 o, f# T& e
6 e9 L9 Q; _" ^9 K; ]
) L% j! R) ~/ C3 ~+ A. {! f' A以上为常用的函数!, V: f: e* y' p% k
还有很多,如有需要我把资料发到你邮箱里
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