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发表于 2012-11-13 08:48:12
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1判断语句
+ {! N7 H$ q9 v! c if <condition> then
- B$ h: D0 d1 U6 ^2 |% p! z <statement sequence1>;
4 k& C' F6 R: u/ }" M' B elseif <condition> then4 v& w7 S$ M6 y% `- ^. K4 y: c
<statement sequence2>;1 ?. P/ y( K# E- v8 w, Z
else
0 W! d: L7 v# G$ b1 l1 f1 N& T/ X <statement sequence3>;
5 h; q8 _' E. _. }, d+ g end;
4 o" t2 J) |( _$ e如果分支比较多,用:
% u+ K! G/ A; k2 Z! _5 O9 p inspect <expression>; ?- S1 l* f% e
when <constant_list> then
0 H. g, ?2 ~3 l6 N+ b8 S y. T) H <statement sequence1>;( m4 C$ P# F3 `8 ?7 N# g6 I
when <constant_list> then
. |5 B$ c/ h% m' O" q8 G <statement sequence2>;
7 w3 t8 X' Y7 s; ~( ~$ K ...
R. h5 h" ?8 x; | else
# H" K m+ y$ `& s <statement sequence3>;
& B9 V' ~' H" nend;
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% U$ S: Z0 G7 w2循环语句9 `1 @$ |2 _: Z$ E5 q
(1) from <statement sequence1>4 d0 [, D& `% E# S7 V. [
until <condition> loop( K0 P. ?; V7 I! Q
<statement sequence2>;
0 P, {/ A ~2 `+ u# v7 S end;
: x6 s2 N" y4 j, N! g0 H6 N9 ? (2) while <condition> loop
0 u1 U0 {& A% P' o7 u7 W <statement sequence1>;3 h4 z c- M$ {, r- ]4 q! V0 Y3 V
end;# H) B6 B( w5 Q( e# g$ f
(3) repeat 0 {+ ~/ L! v. I2 `; F& D
<statement sequence1>;3 \$ a8 K' B$ C5 t
until <condition>;
! V; h, M! w" \/ Q (4) for <condition> to <condition> loop. Z7 o k2 L8 ~0 P, e) e
<statement sequence1>;
0 H7 y/ d8 C3 x: x! h/ N next;
) A0 q* B- B: g1 Q" S1 i3中断语句
n# G& R$ ^4 t/ j: ~# U waituntil <condition> prio <integer expression>;
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+ z; e. d! B8 c' V
以上为常用的函数!$ |- d6 ?9 o; S9 E" ~
还有很多,如有需要我把资料发到你邮箱里
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