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发表于 2012-11-13 08:48:12
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1判断语句( _* Y8 F: v x
if <condition> then
6 h- t" y2 a5 ], X <statement sequence1>;# _5 n2 H4 g9 ^; r: w# h4 G8 S
elseif <condition> then9 Y! Q0 G# Q1 G* i
<statement sequence2>;
) P$ q! ?9 c+ ]; v- I8 J else
! M# {' M' i5 I <statement sequence3>;
$ F5 z3 {+ i; |! n end;
% [3 p* ?# T/ ]9 x如果分支比较多，用：, p: T# s* _: W4 b" _
inspect <expression>
Q# N0 k3 ]& q5 @+ V) e8 i( a when <constant_list> then& K' R# N0 e! i' h- m, X
<statement sequence1>;1 H b+ ~/ B! S7 |& ]
when <constant_list> then6 [ ~& g, e7 J+ X8 ^) N" Q
<statement sequence2>;) ?- T6 D" _! b* V5 \( W; u( M6 I
...) B3 h7 t i$ q
else' k/ \1 w1 f1 f6 C6 j
<statement sequence3>;# r0 Y" Z f$ u: y
end;6 [0 o) p9 g$ S1 f- b! `( h- n- V
: w- J) U5 q# W- q5 F2循环语句
, m" @4 N+ P: o8 w* H8 i/ l (1) from <statement sequence1>
$ i! n4 K t: O! O( [# }- l until <condition> loop
" U# R/ a9 L+ R. l* e <statement sequence2>;7 F/ K1 D6 e( N4 ^ B/ [0 C' E
end;
, g5 P1 H/ l8 T, M# { (2) while <condition> loop7 C. M, [6 i! z) F( k; y
<statement sequence1>;
2 @" Y1 \: ^( T4 C end;
; ? ~# ^+ ?2 n0 k8 O (3) repeat
- n- y; P9 ]# a3 w2 E5 O. c& E <statement sequence1>;
+ r0 I( {* o1 x0 R+ H until <condition>;/ d# ` K4 k# U0 Z& Y& e7 Z
(4) for <condition> to <condition> loop
3 Z+ |8 L: y" v* u, |% u <statement sequence1>;# o# a8 `7 G+ T! x. Q1 G
next;! E2 z m" u( Z9 s0 G
3中断语句4 r7 s x u0 [
waituntil <condition> prio <integer expression>;
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( I; _, X3 \. O7 `
) G. @. j* \6 V: h( f0 E) r以上为常用的函数！7 `, p9 q- A) D4 v( l& H9 L& A7 k* O
还有很多，如有需要我把资料发到你邮箱里
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