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发表于 2012-11-13 08:48:12
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1判断语句( N5 Z2 v3 `4 O; m' F" Q( ~
if <condition> then" b& q$ E8 M8 D4 u/ K: ~
<statement sequence1>;: O9 I: M4 V" \. c
elseif <condition> then
+ l6 f0 s- u. }% l/ c0 q& J <statement sequence2>;
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<statement sequence3>;
) `/ r0 L$ f6 k2 y; Q end;
* G* z& d: A9 q7 A3 q, Q/ \如果分支比较多，用：
' C9 Z3 g/ ]3 W% d: d& } inspect <expression>
. l( u4 X* s+ C: o3 H when <constant_list> then! ?5 |3 r( h# o. ^- Y6 _
<statement sequence1>;* a3 e" h, z3 _
when <constant_list> then
- ~# F9 y( T s <statement sequence2>;
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else' k2 w, h; o& Y
<statement sequence3>;; @0 J# g2 g% }
end;
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3 e) H1 |( l+ m% }2 e3 O J( @+ O2循环语句& L1 z8 i& q7 _3 a4 e, @7 a4 [2 M
(1) from <statement sequence1>1 R! Q+ i- a5 P
until <condition> loop3 |, T( r/ l4 }9 `) v6 d/ U; ~, }) }
<statement sequence2>;
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(2) while <condition> loop
1 j9 `, L! Q6 e. u! [ <statement sequence1>;
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(3) repeat * G" O; r* ^6 [: Y, Z5 |. Y: m
<statement sequence1>;. a" ^. M$ [; V! C1 z
until <condition>;
% p$ q; `( A' x9 L (4) for <condition> to <condition> loop
+ C+ l4 ~" K0 R9 h' @ <statement sequence1>;; R* j$ v$ n) s8 M) B, a
next;) A- Q- N+ y0 ?5 Q4 ?- N# {& t
3中断语句
+ T9 V! @ M, d) s2 ]. j d: u# J waituntil <condition> prio <integer expression>;
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. ]/ t0 Z! u1 w+ o' f* z5 ]' A以上为常用的函数！
8 j: F# y4 f+ Q" u( U5 z还有很多，如有需要我把资料发到你邮箱里 + U9 U, g0 G" A. W7 p& X7 n
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