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发表于 2012-11-13 08:48:12
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1判断语句
, O- N& S2 Y& w/ l if <condition> then
; q# d8 e+ a2 P <statement sequence1>;
' L/ f& S% F4 B0 `# M( m. K6 a2 @+ { elseif <condition> then1 y3 o# p: M: A5 N% S
<statement sequence2>;7 G3 X! @0 N* V! I- c, K3 d* v$ J
else " f* c+ a$ N; Y* V
<statement sequence3>;
) v: p5 i2 \6 x- E U4 }4 \! `6 N end;
6 |4 ~- ?: l( ~4 {: j" b# X- C3 d如果分支比较多，用：
& h/ V+ D4 Y; V r* l U/ W5 Q# I; } inspect <expression>
7 a& @! r0 `2 o" }' o8 Z when <constant_list> then
, `1 H3 o2 r4 r( F# C+ q <statement sequence1>;
* k! _ I3 p8 Q8 x. J8 c when <constant_list> then
N, U% m9 S Z) ?* Q. x9 Z9 T <statement sequence2>;
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else
. |* @+ v" R9 w* L3 p <statement sequence3>;
( Y; ^. E" X* mend;) {: U4 x+ U7 s$ k4 n8 K
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2循环语句# v' u; p. [4 B1 u* U& X8 o
(1) from <statement sequence1>% T; X$ ^' j8 P4 L$ V [. P
until <condition> loop+ N' B4 }0 F) j
<statement sequence2>;
0 M" B/ T4 d$ ~; s4 Q0 ~ end;: f3 [ \" _2 m: u
(2) while <condition> loop
- r7 Y0 ?/ h' C6 _7 Y( g; e <statement sequence1>;0 V* ~; h$ [. z& B" O( ]6 `' A
end;
- R9 J6 P' B# c+ Z! R8 ]5 z% ^ (3) repeat 4 y7 A3 ~$ U) p$ a& A$ m
<statement sequence1>;5 I+ j& W" K( c% j$ B/ d8 R
until <condition>;! U" w9 M: T& |4 j& D2 P" l
(4) for <condition> to <condition> loop4 n8 g# p# p1 u
<statement sequence1>;/ l3 `9 |" K; Y
next;
& e2 |' J' r, K: i3中断语句
( C/ z% y$ Z; _6 S* E, ?7 S1 o3 f, f waituntil <condition> prio <integer expression>;
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以上为常用的函数！
' m' a5 Q% `% m0 O, c还有很多，如有需要我把资料发到你邮箱里 , a2 K! R# |2 G2 r, d
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