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发表于 2012-11-13 08:48:12
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1判断语句# {" u& x6 f, M; i
if <condition> then
* C4 P! u4 M3 n" T <statement sequence1>;
8 D9 v: G5 V6 f3 \& L( G elseif <condition> then
2 q$ _ V5 f4 i. m <statement sequence2>;" T" E) j1 i0 P# ^' F' V A
else
& q4 B/ \2 |+ J9 j <statement sequence3>;
7 ^* }4 @# R+ k/ p2 a7 x end;. G# `" t' ^! Q8 V' h' l. H# C
如果分支比较多，用：9 w0 ^& \6 u ~
inspect <expression>
$ W6 y1 @# r* C$ c when <constant_list> then
6 E" G5 S* J0 @ <statement sequence1>;" n$ F. n% u5 P. E7 P5 W# A
when <constant_list> then1 j& r5 M" A; [3 q1 e4 @
<statement sequence2>;: r$ L7 }+ U8 c; l" ?- N0 M0 a0 ^8 f4 w
...
* L- s& x H$ M9 u2 G7 E else
" i( J7 O+ ]2 ?! D <statement sequence3>;3 @3 q3 G' W' @/ F0 Z2 Z
end;) A" `) V) a8 D P
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(1) from <statement sequence1>4 J! s1 @8 l. M1 C9 S$ ~
until <condition> loop
& B. y, @7 V* O0 M k4 ?% @7 o. y <statement sequence2>;
4 H$ J) n. `/ Y end;
* e- j1 P/ N, p* N (2) while <condition> loop
' F8 P6 M0 q5 J0 I, E <statement sequence1>;* t6 z( J( F% O! g L3 B
end;+ v+ P M- I. n' \6 K$ E; P- x
(3) repeat
# a' H4 X# @) r: E <statement sequence1>;
# k5 \* v. j, h4 W0 M until <condition>;
* z' q' `3 u4 B" a (4) for <condition> to <condition> loop
5 |6 u3 _( U" C7 z3 ?3 z <statement sequence1>;
% }4 i! N( {/ A3 P next;# X2 b5 x" w; ~: k
3中断语句
* z1 j$ r0 O. E* [; k! U waituntil <condition> prio <integer expression>;
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% h* R0 h! ^) T以上为常用的函数！
: i& p0 e: {/ P; U# T% p8 Q还有很多，如有需要我把资料发到你邮箱里 ; d8 T+ W( N; L- A: S
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