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发表于 2012-11-13 08:48:12
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1判断语句 [: \* H1 M! V/ X9 q
if <condition> then
! U6 `& l1 m( P& t' _% L8 c8 n; N <statement sequence1>;( O# `; O& Y! A/ V6 z) ]# g
elseif <condition> then
8 I6 O [' ~/ X q! _( a <statement sequence2>;5 s, V7 w, j6 |% N }
else
5 k' {" Z) t$ T& ^' N <statement sequence3>;
' M: [# |) a& J; T% u end;
# {. R$ ~. T0 [. @如果分支比较多，用：
; G7 X' ^2 ?$ o* W5 ~4 ~ inspect <expression>
1 _5 W7 a; \* I# I" S- c) z" r8 M when <constant_list> then8 P3 ?' L! J7 x" b! z/ o3 c
<statement sequence1>;( A9 Q- k& a. V$ d' L! K [
when <constant_list> then
8 c+ D1 a, `% l5 K <statement sequence2>;
c4 Z# B+ d% S# z' n1 i% \; | ...
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<statement sequence3>;
( h1 m9 w( I2 t8 K& w9 T/ zend;
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' j O, E U, w f2循环语句
d8 ?+ t3 q, v5 {& e (1) from <statement sequence1>5 T) O* f5 B: Y. _
until <condition> loop: I& y( m+ K/ ?
<statement sequence2>;; q4 P5 s# b F4 h4 q7 A) A
end;7 |* d) ^& e; w4 i) t( V
(2) while <condition> loop f5 }- Q5 y, z" A: [
<statement sequence1>;
1 A# c' C' m" a; L" ] end;; q0 f( L& B2 @/ S. r
(3) repeat 2 E; s$ e' t& S$ y! f
<statement sequence1>;
9 _2 ]4 }. ?8 a$ ]8 [; @ until <condition>;
8 u4 h. y4 I1 f4 l' g: L (4) for <condition> to <condition> loop
. y+ `9 ^/ y* d) I <statement sequence1>;
( `5 O" b$ v* J9 Y# D next;; O( `+ Q' e! U3 n9 F/ }' s
3中断语句6 O+ D+ P$ r( U
waituntil <condition> prio <integer expression>;
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以上为常用的函数！% i& Z: _# ?0 e
还有很多，如有需要我把资料发到你邮箱里 4 }& D$ V1 H& p* g( K! v# U0 o' e( r. X
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