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发表于 2012-11-13 08:48:12
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1判断语句; e4 [* H1 w2 L- j1 m$ D
if <condition> then p/ x- K- p( \# V
<statement sequence1>;& @" _# E9 x9 q) g. Q
elseif <condition> then
( T2 Y4 B* y7 |& [% ^ <statement sequence2>;
: r4 R& y9 p5 e& X, N* P0 D$ E else $ Y- j3 w0 [& {" O; u7 r" }
<statement sequence3>;8 ^6 w" _ l% Z# p
end;
( k. M4 D, e7 i$ k" L" D: t; ]# n如果分支比较多，用：
0 Z$ Y' y. F; X inspect <expression>
) e( U! h) F: W$ k% @% t' Q/ a when <constant_list> then
( S1 B C ^! \+ U; O E x <statement sequence1>;' v+ e7 e, F9 d: H
when <constant_list> then
. Y0 K! \; m) [; ~ Z! A# p <statement sequence2>;
# \. K3 h- Y3 l- J$ e# @5 B/ s4 V ...
# l+ H1 D/ D% n; o0 g else% \/ r; m' G E3 Q& J
<statement sequence3>;
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* o0 j) g) a, z! b+ D2循环语句# k1 Y3 K2 d! ]3 s( T' x
(1) from <statement sequence1>1 @7 `/ F/ N+ V v1 |
until <condition> loop
- A) `# [6 A7 g4 g0 V$ b/ A6 V <statement sequence2>;
( X" l/ F; ^" Z7 d: ~1 b( f* Q end;
1 f$ o9 ?& [* Y4 Z7 U (2) while <condition> loop+ a4 i+ s4 @$ Y( b, p: c
<statement sequence1>;) ~9 S" d1 T$ f
end;
0 S& E2 K3 C9 d" U (3) repeat $ R( c0 ?7 Q& o( h# ^1 O: A2 {
<statement sequence1>;
1 l- t/ G7 w* C until <condition>;2 e5 T7 T# x7 L; a% y+ ` w5 Q5 P
(4) for <condition> to <condition> loop
' I1 x* U. y1 Z% k4 C. x& j <statement sequence1>;
# V1 j# M: v* A% I+ G next;2 y$ ]& n8 K, P( F8 c; Q4 j1 F) k, n- `3 o
3中断语句
* N; E& n, n; o K waituntil <condition> prio <integer expression>;
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以上为常用的函数！
* x! c! d4 `2 z b; x' a: w还有很多，如有需要我把资料发到你邮箱里 & T9 M# J# M% m4 ]2 v/ w& r; W
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