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发表于 2012-11-13 08:48:12
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1判断语句* x4 k& C4 \% O% a1 E7 W1 |
if <condition> then; O) e: o! L! l: E" H
<statement sequence1>;
, s" Q6 J# i! j! w! V0 @/ \ elseif <condition> then
1 @: o% [( r+ y! G, x1 R$ f) U <statement sequence2>;( W9 d% A) c7 i8 n( V. I; N; Z
else
( n. Z9 a- j- i# b @) W/ ] <statement sequence3>;* m/ _8 h' V1 l/ ]6 A/ r+ E
end;
p7 k. p' B. a' s4 W. S3 G. H如果分支比较多，用：6 b! H' c x5 |& m: d _$ a
inspect <expression>0 c8 V. k) X' {0 R, h5 M
when <constant_list> then$ x( e/ t! ~& _
<statement sequence1>;4 r/ l: B3 I1 |+ Z. D
when <constant_list> then; V9 _) E+ `' d* A0 ^
<statement sequence2>;
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else
4 ^% ^- J& Z& {+ f3 d# p7 t/ }1 V <statement sequence3>;2 z8 S; m) L1 w1 a6 A
end;
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. w$ a+ a# H; ?9 m! N% o2循环语句& x7 b1 I- v& R4 k3 ^1 L
(1) from <statement sequence1>
- {; i- @ r3 r- }; W# ^. w until <condition> loop+ L! b; D- s( R. @% g4 u3 J
<statement sequence2>;
9 C/ \; _) ]+ i) D1 n1 @2 D8 b end;
F3 m0 l ]' o' S (2) while <condition> loop; K- c; p. h8 F
<statement sequence1>;$ |. m% b% C8 E$ |7 J1 o# D
end;
% s8 w( Y! V5 ^+ ^' B. d# g4 W2 j9 T (3) repeat . m! H: v8 s; n9 S2 V: w0 s
<statement sequence1>;
) s3 I: R/ ^% \4 }- W until <condition>;& A* L4 d/ T) [4 j: m
(4) for <condition> to <condition> loop
5 N) t9 N* f% G, L4 V" v. F* R" s <statement sequence1>;: G* v* C+ Z. C% I/ Z z
next;& M0 m9 E5 ~% K' k8 a0 w: X
3中断语句
# z0 [% Y* U" B; \" e0 f# g waituntil <condition> prio <integer expression>;
+ S+ t6 g+ v; `- F* N; ?, t5 W1 P5 k# h0 d! n
6 E3 x2 {0 {, j8 h( r: L
以上为常用的函数！
0 x9 O8 E0 }: |+ F还有很多，如有需要我把资料发到你邮箱里 0 @% g2 Z6 P9 n* y
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