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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
' a. m$ `4 a9 \0 t1 ~; o3 B( Z: R if <condition> then
% n. p% d4 m$ z+ V/ z <statement sequence1>;
4 I" K$ i2 i; {" p- O5 d elseif <condition> then- E% ~0 a; C0 d' f7 y- H1 ~3 t
<statement sequence2>;" E6 }4 x2 P0 \; B
else
" x. a5 d1 S/ J; |5 `4 Y4 l4 G <statement sequence3>;
^6 g+ k6 F4 q: u end;2 |/ k( ?9 T( e5 W. r& l6 Y
如果分支比较多，用：
) _5 f) J5 G7 E9 w5 X$ ~9 J inspect <expression>
% ^6 t1 Y# |% H when <constant_list> then0 a- P2 t% q( e4 D. f# N9 c3 `( J8 U
<statement sequence1>;! O- H6 ^# L; L+ M x
when <constant_list> then
4 P- r0 N5 H- i) W <statement sequence2>;
1 h, ~5 R5 w$ S( ] ...
; H9 B$ B) Y& q; d5 l1 N* B else
9 M# [: b9 f/ P <statement sequence3>;
+ z/ `% Y: n3 U; s) X, ~$ Oend;1 H9 E7 b/ S" v( @: c
8 F& l3 l% g K0 r- Y2 H2循环语句" }) v: U% S. D9 B
(1) from <statement sequence1>% V) j$ Y' W% Q8 E0 Z- m
until <condition> loop2 b7 R2 l9 \8 f$ L6 p4 Z
<statement sequence2>;" z9 w1 c C6 s: l; o
end;
6 n# b7 C/ ~# Q& r" M (2) while <condition> loop
8 @, i6 K& i. J U K <statement sequence1>;; k* a8 g0 U9 K6 Z
end;0 G6 [7 [( i4 R0 L
(3) repeat - {. f+ E" g* \" `6 ^5 U' k- C4 }
<statement sequence1>;' y* l# a; ^" f6 D& }- y9 @" t
until <condition>;
: c9 K/ o, g- k0 J! A4 d" U (4) for <condition> to <condition> loop
& b/ T" |" i" c% a9 F8 O <statement sequence1>;- w i- A3 N& q1 s7 p' H3 [
next;
9 ^: t! X& G3 Q ~: ?3中断语句
4 l$ o$ z0 U4 H7 E: l/ e waituntil <condition> prio <integer expression>;
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以上为常用的函数！# ^" d* c$ b, G: V' S6 _
还有很多，如有需要我把资料发到你邮箱里 + `9 h% t* Y- k
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