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发表于 2012-11-13 08:48:12
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1判断语句
& n4 ^& t: y4 I/ v2 K# t if <condition> then( t& H% p+ H% _9 Y6 @: P
<statement sequence1>;; e" ?8 A" |/ i* _( n9 ]! `
elseif <condition> then9 S1 Q! V Y- @
<statement sequence2>;6 U/ Y1 j! ~3 U2 T9 f. V
else 6 Z7 I2 F$ I, X% X7 m
<statement sequence3>;
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如果分支比较多，用：4 K: Z7 _3 ]' y: `, U3 x1 l
inspect <expression>5 v. r5 E6 e8 @2 d; h. V# ?
when <constant_list> then
& E2 O+ [3 N9 x2 d <statement sequence1>;+ K, m" }3 Z$ o7 ~, o' X) p2 Y
when <constant_list> then/ n' H) \0 b' b- N. E1 g
<statement sequence2>;
, H; c' B6 O/ E! g8 Z ...
. B7 @8 v0 y+ Y4 t( R5 \ else
. s9 |& _5 u& V. Q <statement sequence3>;
9 g @5 o6 g! R; ?9 iend;
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% }: H% n I3 a7 l- j8 h+ n2循环语句
) l8 E) s3 m4 a (1) from <statement sequence1>) O' S6 ]7 ]& @- |" {- `
until <condition> loop
) h) @8 j( B4 F' l. E/ v2 f <statement sequence2>;
; a! O6 k7 E: o4 B* V8 t$ X end;
' R% E; r& |" A+ Y" g$ l) O* e (2) while <condition> loop
' e" Q3 A9 E6 C" M$ { <statement sequence1>;
7 ]" M( L* |6 n8 O end;8 y: z L; `: Q3 o2 I1 M
(3) repeat - _8 I% u1 e- q8 }" \
<statement sequence1>;$ W8 k1 ?- ?( p# c6 ?; v
until <condition>;
4 y8 x; s+ Z ~' c% X0 f0 u( W (4) for <condition> to <condition> loop
; R& j9 _ i7 P, p/ G% ]7 } <statement sequence1>;
8 g/ ~- `3 E0 I! \, p! y next;) m$ A* x, I' n/ a1 c$ K! y. {9 w7 G
3中断语句
) O% l: Y3 P1 b4 B. K waituntil <condition> prio <integer expression>;
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以上为常用的函数！
, i. \6 z8 T: T3 S' n还有很多，如有需要我把资料发到你邮箱里
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