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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
' T0 i$ b5 T# D m, n) [ if <condition> then
, i+ H0 A+ ^3 T% f7 q# T <statement sequence1>;
% g. F! b4 a) s" |6 A$ | elseif <condition> then! w: m2 N9 k/ O8 {, N
<statement sequence2>;4 \$ J$ n" X. n1 c
else
; d# T0 g# t. ` <statement sequence3>;
* B* t- h+ B. \3 U end;$ }$ o/ t! c9 T0 j
如果分支比较多,用:( L/ U# @( S* R+ z" Y# ~9 _
inspect <expression>
% T" H2 k/ o3 H9 K( ` when <constant_list> then( R; x' s K# M0 t, Q, t5 w% l; Q
<statement sequence1>;
& X* s7 m4 l0 s2 N when <constant_list> then
: A% |8 L; v: |' m" U& D- d) l <statement sequence2>;" o8 S3 i9 c& |
...
6 A( v' V$ u q else
$ q5 d) Y4 d. f5 T/ ~ <statement sequence3>;. f" f5 R4 i' G
end;) }6 {. ?6 o0 [$ v8 u
4 G& c7 R9 J8 L7 v
2循环语句4 ^' P3 P% d! N/ n' Q, w- T$ [
(1) from <statement sequence1>
7 ^7 Q8 j1 w- M& }3 ? until <condition> loop P+ W S- u4 G# ^" w' r1 l; Z E
<statement sequence2>;
; C: S; d( S- D end;
- t, Q% P6 X" \ X) t" {- r/ e (2) while <condition> loop
% o8 r# K u' q# \ <statement sequence1>;) P1 _0 h7 Y6 ~/ G" b, a+ S6 \
end;, f+ ]/ b) Z& x6 j" z: P1 b6 x
(3) repeat
: _; z6 r) C8 d6 U! t( h+ D; m <statement sequence1>;
0 w! |* x/ S: L# m7 K$ v/ O until <condition>; O* X4 u; O# d! X
(4) for <condition> to <condition> loop, D* V: S1 {. C- C# B
<statement sequence1>;. L @" F: o$ h3 ^/ l4 i/ Z. G
next;
3 k0 i0 ]' W& v! k n4 F3中断语句
- ? s/ Y8 a2 j4 P waituntil <condition> prio <integer expression>;
) k/ G# d) U+ M' t% ^1 n6 L" u9 x4 }) \8 V- R
: B) O0 l% X3 Z. E2 G以上为常用的函数!
9 l" q3 h+ ^* y7 i; n6 l还有很多,如有需要我把资料发到你邮箱里 7 L7 r& Y- S6 B+ s/ Y
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! b, z7 j8 O: P- p9 |2 E$ F/ ? @; P# W0 z9 L( p8 m; @5 U
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+ ?8 v0 I# u2 @! T! Z4 M+ K . a! P6 q1 c3 V0 t
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