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发表于 2012-11-13 08:48:12
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1判断语句" E4 i* ?; i) R( u* b, V
if <condition> then; f3 v, _, |2 L
<statement sequence1>;
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<statement sequence2>;
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<statement sequence3>;- Z. y- P. c7 B( U! F3 ?# ^
end;
8 z; Z- J. B# g+ [4 y如果分支比较多，用：
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when <constant_list> then7 x5 o1 d$ v& W0 Y6 m6 R6 @
<statement sequence1>;# ^- V+ L `, S* ~
when <constant_list> then
! L ?. M4 I2 Q7 G <statement sequence2>;
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else0 m2 b' l0 a# D
<statement sequence3>;
, |( Z) s$ F7 P: f& wend;, J* ^; }/ v. X
! r' G9 W# ` `7 j0 G# Q2循环语句
% [( ~7 [/ X8 ] (1) from <statement sequence1>
+ l, G+ {, z' ?( L! v until <condition> loop1 l# M- e4 \) u# y1 s' F( w+ P0 l! ]
<statement sequence2>;
/ l& u- E: c! l0 h1 n% T end;
' O" x. ~$ I4 |$ A6 E1 Y (2) while <condition> loop* a* h( @, o+ m
<statement sequence1>;
% K1 ?/ |. c5 V6 _' C, H end;
$ r$ n c7 J+ A! {: v% B* I (3) repeat
* x8 c' |( c4 T: y <statement sequence1>;
8 c4 m: e+ K. T/ I! ? until <condition>;
r& ^" U& ^2 [/ S- K! V ] (4) for <condition> to <condition> loop
. K0 K/ M m" W" m8 r <statement sequence1>; H& O; ]$ H; e, Q" M( _4 G4 f
next;
( r1 F! k9 v- u( d5 S! k3 E3中断语句
, n# ^, q( {% }2 N waituntil <condition> prio <integer expression>;/ S& k5 _) l0 X
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/ J; ^7 e2 e1 s: }9 B+ S& ~ I以上为常用的函数！& D5 [) ^& f* z% h
还有很多，如有需要我把资料发到你邮箱里
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