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发表于 2012-11-13 08:48:12
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1判断语句
7 G! S2 D3 ~6 e if <condition> then& D. p3 [: N/ T3 r" b4 E. f/ [& ?
<statement sequence1>;0 c. W* ^5 l; A8 h6 [& Y' Y
elseif <condition> then S: v8 r/ I( z, F
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：4 X/ w! h6 k j% T
inspect <expression>
2 ^4 l' y$ E" h when <constant_list> then
9 N: `8 o3 _9 `$ @0 n1 i. c <statement sequence1>;8 r% D: W# ~; [0 f5 N# H# k" F8 ^, E
when <constant_list> then% `9 I7 h! U- r$ L3 K$ R
<statement sequence2>;; O. W6 L9 X9 ?9 c$ [
...- B8 m2 s2 o3 x0 |) T! B% m
else0 w, u& A2 ~5 L0 b5 x
<statement sequence3>;% E. c# s! }1 V* f1 Z4 `
end;
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" K4 i k6 k; `1 ~# s2 x3 s2循环语句6 J+ @7 Y* W' s. `3 [6 x9 e
(1) from <statement sequence1>
3 z: }4 |' Y4 f: E$ z& ] until <condition> loop8 F% Z4 I g3 G0 N5 q
<statement sequence2>;2 Y6 F* o5 O6 D0 e2 T- u( ~
end;
+ G; Y- D' _( l5 v0 n (2) while <condition> loop' x6 g) A e$ i1 {; B
<statement sequence1>; C# h) O P$ Q% n
end;- c7 {- s6 b' b' L$ M
(3) repeat : J9 ]% T3 m7 Y
<statement sequence1>;8 ~/ f5 Z% n- _6 |% O8 F) ^. z9 K/ Y
until <condition>;
5 ?9 W$ L+ X6 H (4) for <condition> to <condition> loop
' a |5 N/ {$ `% z3 r, A+ P: p <statement sequence1>;3 B* H- Y) g, f X# c9 ~) P
next;
7 M9 [5 q8 G, ^5 ?# {; s0 S3中断语句
8 L; I0 w, p. K1 J9 y$ J waituntil <condition> prio <integer expression>;( O% d+ R9 [6 y/ S1 e: }
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% q7 j9 @7 b- p* a以上为常用的函数！9 d: H' `! u& F0 A, e
还有很多，如有需要我把资料发到你邮箱里 6 i8 k1 x' M% |2 b) S" l: c% r
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