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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
& j3 \9 ~. U5 o+ A if <condition> then
$ Y1 {2 }! h! z! p4 q <statement sequence1>;8 h1 H% Q: {* B7 W! X/ w
elseif <condition> then
$ s6 `6 v3 e6 K3 O5 S3 c <statement sequence2>;
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<statement sequence3>;
8 @$ ]! x8 d) f9 c7 H# O5 n end;0 n% n3 e5 f. W
如果分支比较多,用:
/ ~$ x! L' c/ U' t; X inspect <expression>
+ H& |) y3 |7 |. o when <constant_list> then
+ r+ ^8 n( @# f <statement sequence1>;" N! `/ K$ i8 Q3 d+ ?, G' f/ f Q( v
when <constant_list> then
) f- P( c. Z" V/ o! L <statement sequence2>;( M7 s; t- A7 ?1 \
...
9 y+ K' E" C- j( W, ~5 y V( y) O else
# a5 F" R$ b6 q, N <statement sequence3>;
* }& k$ Y6 y' c# i" h/ dend;
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2循环语句
5 z2 }! t7 ~. ~. e (1) from <statement sequence1>- j) z+ ]8 [2 D2 }1 Z- | h
until <condition> loop* I C0 g y. h" A, ^
<statement sequence2>;
& w1 S" r% K4 h8 \% Y end;
2 r- g' Z3 @& i (2) while <condition> loop) ]4 [1 C' n9 J
<statement sequence1>;
, d2 Q1 ?( ~7 D; m+ M end;
+ q U; [+ j0 `% U (3) repeat
3 _2 l: Q$ d0 N) A3 K$ j/ Z0 U <statement sequence1>;/ y" d" v" y! b; n" f% N( C) _
until <condition>;
- P; s# ]) o0 z. e2 E4 T* S (4) for <condition> to <condition> loop# u& W- G' Q+ ?- Q: R
<statement sequence1>;
% q1 i5 K: q" U* T8 |3 [ next;
7 |6 d( F$ _3 r$ [9 _4 C/ `9 b3中断语句
5 Y- ~5 }: I: e" h+ S' x waituntil <condition> prio <integer expression>;
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以上为常用的函数!- a1 G0 ^4 X" H( y* M+ w
还有很多,如有需要我把资料发到你邮箱里 f; c! I# M$ O3 q/ O) K0 n# E0 T
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