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发表于 2012-11-13 08:48:12
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1判断语句
& E9 r$ u' y! H" M: S( K if <condition> then
( V; |: s! G" |4 u5 O <statement sequence1>;
* \- o- L/ P3 b7 {) I; D. g9 ] elseif <condition> then& H* n& y1 G4 f* P4 I& N, q; Q
<statement sequence2>;
% R9 f5 i' k" Q) Q& v- i1 j: C else
6 f6 L1 D8 l& s6 w7 c8 ] <statement sequence3>;- F- \ p. g2 n: e
end;
( \1 W: J9 C5 m如果分支比较多，用：
% ?: J% J' b( ~2 i. @+ x inspect <expression>
! L& E' C# {6 y when <constant_list> then
/ j" b4 L# a/ D$ ]1 M, L <statement sequence1>;
- {3 X" Z, F$ x+ J7 O$ I7 r3 R( _* e. t when <constant_list> then) B8 S. E2 Y$ l# Z+ S
<statement sequence2>;' G' E* ]6 h8 ]. \% ^' p
.../ {3 R2 H- s( H3 w
else
% ?+ f. F' X! A) ^* g* R <statement sequence3>;
9 [" ^% `$ y! Z5 L- zend;
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* g0 _# D5 Q: \2循环语句
V$ X+ i- g( A6 ^( H8 O" G) B (1) from <statement sequence1>
# s( v) I% W ?8 F& l5 e until <condition> loop
3 D. }6 U0 y, ?( k: ~# p* d, f <statement sequence2>;
6 \! O, s& I& A' ^ end;
8 d' {3 n6 O" `: Q' X, P3 D+ S (2) while <condition> loop% z- M$ T3 r: w5 \& @
<statement sequence1>;
9 \4 D, \' M3 f' t+ D end;
1 G: x$ s/ j5 @. U, v! ~# F! M (3) repeat # s: e0 h0 @& @$ A
<statement sequence1>;4 _9 v1 q1 J6 n* q
until <condition>;4 N5 J( ~7 F' }* b, y8 O5 E* b! _
(4) for <condition> to <condition> loop$ q7 K1 K( s; l6 v9 K( _
<statement sequence1>;
9 z4 }' k! x9 f next;, t2 Y7 I4 y) L8 v- P! |$ H0 C! x
3中断语句9 r8 J( Z( [4 {! ~& Y
waituntil <condition> prio <integer expression>;
0 Z7 d) x+ v/ `7 C% _7 v" w/ r. p, K) m" ?# _3 z6 U
$ F: y+ k5 s8 u' c( q6 Q1 \- U以上为常用的函数！
3 D+ s" {3 |# ?* l5 A1 k0 c还有很多，如有需要我把资料发到你邮箱里
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