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发表于 2012-11-13 08:48:12
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1判断语句
, M' S( H- ^( k" s8 e' O0 [ if <condition> then
( V; A* i: h. H, T3 Q3 L <statement sequence1>;3 ?- i! u! S" {- w$ r8 ]. a3 Q/ s
elseif <condition> then. w2 l5 r3 g1 x) |5 D3 b
<statement sequence2>;
( g: p6 w/ N+ P. p& I3 t \6 s( r else
) R6 O" \2 r+ G# e# r5 S6 ^ <statement sequence3>;: D3 b, p' a s+ x3 r ^7 n. U
end;
+ I* L8 @- W; K如果分支比较多，用：
9 C. C; c5 F) K$ v- u inspect <expression>4 b7 W- S M) b( Z7 n! z
when <constant_list> then! V- H- k6 d; B0 E
<statement sequence1>;
) |( E7 C# |& R0 Q1 P when <constant_list> then
* n$ C: F. y5 x, ?9 N <statement sequence2>;9 G8 A. y+ P8 e3 S! n
...) F/ \8 V6 K1 b0 _( X F7 C$ V
else
/ Z) b3 m) {) k \ <statement sequence3>;
. c( W; @6 T9 z. uend;6 a4 N1 z: s* O" z$ M; K9 R6 i
h) y1 F+ j! |5 R" u( f2循环语句, K! ~: q$ W" L; P6 o2 I; E
(1) from <statement sequence1>
3 v J& w9 M1 G; g, T until <condition> loop
$ J6 B% H8 d; v <statement sequence2>;
5 t& F% M3 J' O9 @: } end;. N' K r# p7 w9 v% H3 u
(2) while <condition> loop
c5 @9 m! w/ @1 e/ J <statement sequence1>;) S' l, ?# c8 N' u$ G9 \3 v
end;
y# b; t' L$ k. Y0 m9 q% q (3) repeat
( G( w# C( q1 r <statement sequence1>;
- X" |% @2 G# T0 n3 d' V' s! Z until <condition>;% I/ L$ k# Q$ Z" @: F0 E5 |2 M
(4) for <condition> to <condition> loop; x/ ]- D8 }/ O* @6 f' s/ N
<statement sequence1>;
8 m0 Q+ B" b$ ]- F, J next;
y8 ?( I5 r+ Z y3中断语句
" n2 \$ ^( b' O3 R0 R waituntil <condition> prio <integer expression>;" g. l/ C8 l. n- c
J" f7 h9 p& N5 ]. s9 F7 E0 }+ J1 M' F1 a* ^7 \" ]% ?
以上为常用的函数！" T) o; |. I6 b w M) r/ k- Q
还有很多，如有需要我把资料发到你邮箱里 4 h' G+ p& b" b
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