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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
4 f% |' y/ B( s, F( B! |. b; n if <condition> then
5 Q3 q7 J- v6 q <statement sequence1>;
( [! k0 ^9 w0 ` W: W elseif <condition> then# Y4 v# P. @* P9 z- m
<statement sequence2>;9 f4 G, h5 M* A) [3 G
else $ N; P5 O0 `% x* C( r, d: R4 u
<statement sequence3>;4 \3 S3 `- H/ x
end;4 B+ Q" K% x! Z3 q+ E7 ~
如果分支比较多,用:3 d3 M* x$ y8 i ]7 O+ s- T
inspect <expression>
9 W+ v, Y7 g$ r& ?$ D when <constant_list> then7 N+ {* G/ h* p9 A5 x3 y [
<statement sequence1>;, D& f! v9 `! {: r6 k4 I4 p9 |
when <constant_list> then
/ E- F0 K& D8 v0 v, c( }# C9 D8 w; e <statement sequence2>;
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else/ F0 V! Y3 \( G' a) a
<statement sequence3>;0 U% R$ `+ |& Z( K) r" e" F( {
end;( R6 ^! Q* v$ j" j) l, i
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2循环语句) X9 W, R( y( V1 Z7 I
(1) from <statement sequence1>
y; p: A; |8 v5 G/ Y. I% t until <condition> loop
. C0 ~9 L8 H$ @, ^* u2 i4 F! } <statement sequence2>;% b: h9 Q* N/ P' X1 Y
end;
# R7 t/ Y6 ^" Y4 ]0 H8 a8 p (2) while <condition> loop) ^# I/ ?7 ?5 ?
<statement sequence1>;) } M% h' H* d$ b# q
end;
1 f# g4 d; E b& v (3) repeat
1 Z4 O4 R" r$ x) `. { <statement sequence1>;
7 W! h& {4 V- P% b; F7 }9 H until <condition>;
' b. }) v! G" h o8 a4 [ (4) for <condition> to <condition> loop
+ E" Z3 f* y$ r <statement sequence1>;
2 s4 I# H9 \8 A8 u1 t next;% ?+ |0 c; S/ @. L& L2 Q
3中断语句: a- j+ A) I; m0 ~
waituntil <condition> prio <integer expression>;
& r9 [- ^, W, d
. W0 ?# v) z3 Q* D8 ]' {
* J( M) l1 m! F A& G& e4 O" Q以上为常用的函数!
`+ I6 r# T1 P6 g还有很多,如有需要我把资料发到你邮箱里 ( q' b' ?" D" U% O
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