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发表于 2012-11-13 08:48:12
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1判断语句
* a# K7 C) P0 p3 e if <condition> then$ k' v% t( b8 V9 ~1 s# k
<statement sequence1>;
# n, ^# _4 e' }* b7 l' S elseif <condition> then5 t. P- k* G* _% z
<statement sequence2>;3 G( W4 Y, g( c* P
else
' {; k3 d3 d, h7 Z$ Q% q8 K$ x, c <statement sequence3>;
% }) S' f* X1 w' f end;
5 {# h, s; G" J+ q. ^7 M H如果分支比较多，用：
8 D+ G5 e. a7 W X7 {! { inspect <expression>
( i' g6 \( }! y$ X7 Y! X& N. Y/ V5 u3 x when <constant_list> then
Q* V6 [; e! `, b <statement sequence1>;0 S2 ^+ N# H( B! v/ b
when <constant_list> then$ V/ N4 Z$ h& J6 t5 A( d" K4 z
<statement sequence2>;: B, ^5 W: A. v j' L
...
/ y, N+ f+ s9 ` else! I0 r) E( w! A% }- r, |
<statement sequence3>;/ F; g/ H3 W( R
end;( O1 ` d- j% G7 r2 w8 K
0 B- ~. x. ?* e7 f$ y+ k* ^# j2循环语句/ }2 l) L% V' J& ^
(1) from <statement sequence1>
1 f2 `8 Q# N+ p" z7 \ until <condition> loop
# M9 B; b& I8 K# j4 g% J <statement sequence2>;' e$ a- b5 D# R9 L- d
end;7 J9 q" v. k/ u1 i+ k& E3 b" j$ b+ ^
(2) while <condition> loop
! C. c( f( ~8 d( e8 ^, B <statement sequence1>;
+ I8 X# H5 L, b9 `& [% p end;
6 O# Z- F* F' T: ^- B6 y (3) repeat : `; J8 c% T: u4 s/ C
<statement sequence1>;
' j6 [( R1 A4 j# Z; m5 P5 k4 j until <condition>;
+ o$ g5 z6 A; @& {' _- N% x (4) for <condition> to <condition> loop
( d$ H5 T/ A4 n# k$ N <statement sequence1>;
& i" O! X6 i& s next;3 I1 g' E5 ?- H9 f3 E5 F
3中断语句
: @0 `" t8 @# `1 a- _ waituntil <condition> prio <integer expression>;5 h4 C8 t/ ~8 W% B$ D/ q7 K
' ]+ s9 g" C0 n" A- R# j3 N, x3 v
以上为常用的函数！! I A+ e: U; e
还有很多，如有需要我把资料发到你邮箱里 9 s) Q% v* R2 N4 q# t
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