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发表于 2012-11-13 08:48:12
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1判断语句; S5 [1 I$ H [7 a7 c3 Y
if <condition> then* C9 e1 C4 X1 }8 V h: r3 M
<statement sequence1>;
* K' _& Y; {/ c elseif <condition> then
1 @! U9 y" p- P2 C- p <statement sequence2>;5 L0 j/ T8 y# H1 x5 p8 V% L
else - O0 R! o9 |( T* B. [9 H
<statement sequence3>;
! @6 G, t9 c! X, S; @8 h end;
" M* J; s& T9 M% I) N# w) a* J如果分支比较多，用：
3 L n. |! X/ ~- G9 W inspect <expression>$ N3 }* G$ @; A6 @- j' L: ]
when <constant_list> then" j, G% q; A1 p; x; g* ]
<statement sequence1>;. s" O+ c5 l% g
when <constant_list> then$ ^. p) P1 f' e) S- w
<statement sequence2>;* j* c8 W2 B" B
...
( ?, r0 w" T: l& u0 g else) e6 }* S) ~/ Q
<statement sequence3>;
$ H9 ~# J- C M7 ^end;1 k) K0 Q) o2 b/ `' w0 d
4 n' \1 C. i$ w X; d7 Q: A5 ]2循环语句8 I$ z v4 N9 A$ Z F
(1) from <statement sequence1>
?0 D/ P3 g- g& O& o: g: \: e- Y until <condition> loop
0 F7 L6 | G0 g. m <statement sequence2>;( Y# S2 X9 w) l) C8 j$ z
end;4 B1 z9 k: K1 A' C
(2) while <condition> loop, H# N( y' x6 e6 |
<statement sequence1>;
7 ^* H+ N* O9 T end;; `4 F( [. X( |) @) m
(3) repeat
3 h1 Y# ^ i; n; A! O5 D <statement sequence1>;
p+ @6 t/ M: i) y1 W until <condition>; E N: L+ D4 f2 b$ y' d
(4) for <condition> to <condition> loop) }0 P; G3 H$ n/ v( _
<statement sequence1>;
. I M" n: M. f8 E, F2 v next;
) h" q4 J' E. A1 v3中断语句
1 r& s) O6 O0 k: G* a4 q& R waituntil <condition> prio <integer expression>;8 G- }- U! k% v2 k
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以上为常用的函数！
c- _3 n( {/ Z: q) }* f# l还有很多，如有需要我把资料发到你邮箱里 $ }, {6 I2 Q6 r7 g
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