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发表于 2012-11-13 08:48:12
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1判断语句
3 T/ \6 M* }# G if <condition> then
: v: D+ _& V1 c# g' Q0 q <statement sequence1>;( k0 i& p# v& F4 O' Q9 n1 h# v
elseif <condition> then# N7 x/ Y* F2 W; p ?
<statement sequence2>;
( S( J2 m: a$ U) G3 W else 8 g; k$ A# Z& d, r2 n2 ]
<statement sequence3>;8 m3 x' v; k& s9 l# q
end;
( X& f; L! [4 O4 r如果分支比较多，用：
! t* i1 {$ ?2 o; a' R& c inspect <expression> g% t. d- i- F. d
when <constant_list> then, ]& o- p# V( t( F
<statement sequence1>;
7 D) ]$ q7 g% W when <constant_list> then; t/ r8 O3 d9 m( U3 t
<statement sequence2>;
: X$ L0 f/ k0 x) } ...! r( s7 G2 A* s B
else) O8 P2 W1 w# }( S! W' r# \% \
<statement sequence3>;
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5 k5 v/ n' B( e
2循环语句
. a& _3 v. Q& y6 d8 n. i+ S3 N( f/ A (1) from <statement sequence1>
) i0 [8 g" q$ U; ?% r until <condition> loop
w4 F% \; D2 `5 A { <statement sequence2>;2 i! j) m0 m. ?- t0 }; |" f0 N6 }
end;& T2 G8 q$ m+ s. H( x! a
(2) while <condition> loop
9 `0 J% I9 m/ h! I% e) S <statement sequence1>;
9 ]8 o8 s+ Y. t, k R& r end;$ L* D( S* l3 [% {# ?- F" [
(3) repeat
) j S- b/ ^: @: n <statement sequence1>;
9 z4 o9 f' x: k \% d; s until <condition>;
: x+ a6 r- r; y" y- _0 ? (4) for <condition> to <condition> loop% U; {& E- I; h( s8 E- x5 n! O
<statement sequence1>;. g8 [" {, H3 Q& h' Y# Y; x1 f3 B
next;
* M, O4 @+ c$ N# p3中断语句9 P1 _ }) C& N$ `& {
waituntil <condition> prio <integer expression>;/ F) b* z* Q' A
: O) W5 d: Q" m: x
; Z3 _( A7 f, F以上为常用的函数！
2 {; n: R; Q5 ~4 ^+ ^, c还有很多，如有需要我把资料发到你邮箱里 . O5 w: Z' _& v4 X% b9 _
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