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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
% h. F2 s7 n- u1 [! M3 S/ g if <condition> then: X7 Q. C! a2 h0 i) R% `
<statement sequence1>;
9 H9 l v. A# _* K6 X" G elseif <condition> then
& z: L" @' [' n <statement sequence2>;* U+ Z; H$ w. l
else
8 G& Q6 T1 m# }6 g' B <statement sequence3>;" `8 r1 K9 q7 @2 s \& V+ f8 C1 h/ |
end;
; c9 {) ^3 H1 Q1 @如果分支比较多,用:
) z0 M& w' S/ }2 ~ H inspect <expression>
. p `) k5 s$ C9 Z when <constant_list> then
5 I/ U# B! O2 l* H <statement sequence1>;
- W9 E( d9 y! u B; ?. o when <constant_list> then. t- @. d P1 o5 U
<statement sequence2>;" y: C m( q% {% I0 o6 }# s
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else
z+ L4 Y6 U5 w3 B <statement sequence3>;
7 ~7 Z, R7 A( w1 j% f% Vend;
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2循环语句' g& o6 g8 B, q5 h" _
(1) from <statement sequence1>
( N) ^; y$ _+ l until <condition> loop1 B( Z' }0 D0 O2 q/ S
<statement sequence2>;
4 {% w: w* Z# ]* ^( j* y8 F* ^ end;
* I5 @2 W. r) D+ h( D/ P% m' _ (2) while <condition> loop1 V+ [/ k, S/ }4 ~+ g0 \' v9 {
<statement sequence1>;! y/ p& K0 `7 ?* L' h: _: l
end;
6 v- {! H" C) f! [ (3) repeat
9 ~3 d/ c3 g2 u' C/ @9 @; H <statement sequence1>;
x9 c; J6 Y: D5 T until <condition>;
. Q( l* x% x. }2 _4 j/ H7 I: x% o (4) for <condition> to <condition> loop
, T# L. l3 C( A) s9 s <statement sequence1>;
' Q4 M! N' M; M. k5 h next;( h( {: ~1 n h: N, N9 r; B
3中断语句. e6 W5 X7 \3 a- j3 p( m1 Y( q
waituntil <condition> prio <integer expression>;
( ~% @9 I s' M, J/ ?4 ~1 p, s2 h, H. _# w( T! v
8 Q. o0 I/ Q, Z* L) s9 Z3 K& }* S0 ]以上为常用的函数!
# d+ [" y/ O4 I8 M9 L. q还有很多,如有需要我把资料发到你邮箱里
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7 m; T: f! G# ?/ u. X' ]( V/ h, a
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