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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
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<statement sequence1>;
8 x% D" x3 {/ E5 y7 a. V5 V/ U( } elseif <condition> then' q' ~4 D4 p+ l0 L
<statement sequence2>;
1 c2 _' x, c- j( G else
0 E7 O. G+ j% x$ ] <statement sequence3>;
0 t: u! _! [& i9 m2 I& i6 G. m6 n' @ end;. B) s3 p# A7 W' \
如果分支比较多,用:
4 y! y$ j; M. b; V inspect <expression>' C. D9 Q% l U# d O
when <constant_list> then
1 y# |3 j. J( {( I7 H <statement sequence1>;
. i/ r6 K; l& t2 \1 H when <constant_list> then/ U' A5 @# b; @
<statement sequence2>;
6 h3 a4 W, W8 P# S* c* z8 g ...
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<statement sequence3>;
) }* `; { S3 Q& Pend;
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(1) from <statement sequence1>' I% O+ o' H2 T: ? E4 v w
until <condition> loop
2 s1 O" H8 p: x) r5 |4 n <statement sequence2>;/ {) I1 j4 Q8 Z$ v" S0 O2 b0 T
end;
0 g& G5 W1 K. p/ c3 u9 ?) c (2) while <condition> loop
% y( b1 U- A* Y6 d, \" \ <statement sequence1>;
3 l d8 W/ A8 ]( i' z! B6 V end;
# i% L0 ]( N& v9 p) ^$ g8 | (3) repeat 7 ~. m2 E& ?, H% q3 s& A
<statement sequence1>;3 a4 A# h ^. {7 K, E2 G- Y3 O
until <condition>;! z* A4 o, [0 V! c! U
(4) for <condition> to <condition> loop
$ ]8 \1 l" i4 M <statement sequence1>;
. |9 \# {, T6 G u next;# ?. {/ ^2 _1 I- C1 E
3中断语句; q# z" u# M+ R" U T* W
waituntil <condition> prio <integer expression>;
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以上为常用的函数!
& s$ ~2 c) Q( g4 R- l还有很多,如有需要我把资料发到你邮箱里
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