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发表于 2012-11-13 08:48:12
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1判断语句
' H: A: i& X( O: w% e3 q: K if <condition> then
* r3 ]/ Q; D6 G1 l <statement sequence1>;
2 r) l$ R% ^( E elseif <condition> then E( N, f, I" m8 I$ F7 W: K
<statement sequence2>;; i; E4 j' u1 t' R+ U3 _9 ~
else / w: t& G2 ^! U
<statement sequence3>;
4 E6 B+ {& W. A" Q% T; k end;! }5 M/ S% F5 X/ n8 V1 ^& @8 o
如果分支比较多，用：
3 f- b" s+ w- i& |6 m) f# r inspect <expression>
' l8 m+ n3 h }2 a when <constant_list> then$ k) q3 t" A$ g ]+ M; [% k+ w
<statement sequence1>;1 ?, i% V! [8 }/ c6 y/ K, V! N
when <constant_list> then/ V J( f7 V! b/ n: P7 t5 I+ x& o
<statement sequence2>;
* p" {9 B2 O5 o* Y7 _9 r9 \; B ...
% g8 h3 l6 v4 s* E5 P- U else# y' q) Y& k* O u" j2 i% S
<statement sequence3>;2 {' N4 D. p& p) b# S
end;! m b4 C; u9 a
3 e& V# T9 q' J/ Y0 y; C2循环语句. }$ }+ \4 }, [; m( O9 g* }
(1) from <statement sequence1>% o/ a3 n! s' _3 y1 r' q
until <condition> loop
: s% w+ F1 \; U: s R$ { B <statement sequence2>;1 `. F: P+ e: ^+ k5 X7 c- a
end;
: ?! X0 X+ }7 y: w$ u/ _) d: x (2) while <condition> loop
4 q7 h( O" e8 X' u: P9 U <statement sequence1>;
6 R: s6 L8 Y) h' K1 y: @6 }: d end;' C9 m" A5 i6 N. L
(3) repeat
6 b4 e# D" y5 E1 I0 q( t <statement sequence1>;: l2 ]' J, M* ]1 w% e3 b
until <condition>;% v; s) |# F/ \) _! ^# m! J" o
(4) for <condition> to <condition> loop: g; |4 `" M/ c+ i
<statement sequence1>;3 D, j1 U7 I9 }; u
next;. a( m' _+ `7 P6 E- |* p
3中断语句7 K$ q( {1 S! j9 q' O
waituntil <condition> prio <integer expression>;- S# l: K5 E' x L0 ]$ q/ M
0 n8 i5 |- F/ x: b; f
: ^/ g0 C3 _8 ^; X" O3 R
以上为常用的函数！
7 O& U3 P7 ?/ l( G" s还有很多，如有需要我把资料发到你邮箱里
6 Q! a* H( S) I5 S: P$ D7 h% i4 T1 y: ~' q$ O; P
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