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发表于 2012-11-13 08:48:12
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1判断语句4 q# Y6 s; {# `( S0 S
if <condition> then! E: s: s3 V8 [
<statement sequence1>;
3 w. S* s. `2 W! a3 ^4 y) S$ l elseif <condition> then. @2 @* q: p/ {* F
<statement sequence2>;. |! h& c3 Q; w6 l: r
else * G& g3 P. }: H
<statement sequence3>;
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如果分支比较多，用：
2 O( d |1 d( q! g& X/ o inspect <expression>
, N. T8 n( p6 w; U# N7 U4 I when <constant_list> then7 g$ L* e$ k- E0 }+ s0 U
<statement sequence1>;5 k8 ? f8 a; t. A
when <constant_list> then- @* S: T5 ^* N2 h
<statement sequence2>;
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else, J0 \* t$ `2 ?% C* T- A
<statement sequence3>;: f% H* Z* a3 X+ ^
end;) M. D, J$ O+ [) _
) q i/ r, b/ b4 x9 p# L# C2循环语句
0 y" |) ~ ^& k8 H (1) from <statement sequence1>, y6 h+ g) H- d# }$ u' m8 d
until <condition> loop
. Q1 Y* S+ t0 C/ g/ K <statement sequence2>;5 N* ~/ o8 G! g% l Z
end;
. m6 E; t5 O1 @- U) \& f7 _( ?- k (2) while <condition> loop
2 X/ \; y$ W9 z }1 P <statement sequence1>;
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(3) repeat
8 P4 }# i( Z+ x d( y) e$ [ <statement sequence1>;
0 E' O: V5 d y) @ until <condition>;
0 q- ] ?4 C {; m/ S9 l. v (4) for <condition> to <condition> loop" h i4 j, f; Y1 W1 Z. }5 Y7 `: w0 H, Z
<statement sequence1>;' x2 Y+ _% ~. h
next;- a3 u% D8 f1 w6 Y2 _% x8 P/ R/ ~7 \; t
3中断语句
6 |: y% w4 v- g) i* z# A& ]7 J waituntil <condition> prio <integer expression>;+ Z* n* ~ g7 H2 k
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以上为常用的函数！
. J4 O2 K$ q4 n& H( ?; ]还有很多，如有需要我把资料发到你邮箱里
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