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发表于 2012-11-13 08:48:12
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1判断语句
6 b: V. H* @/ ?' ~) b- `; u2 v if <condition> then1 j8 r' W! O) H
<statement sequence1>;
* w) u$ a9 \/ ?9 c5 O" N8 e elseif <condition> then( H) ?3 {. }2 g3 _
<statement sequence2>;
% P, E+ Q* e# J! S9 m else
. |2 r* J, S* o/ i4 B6 _( |0 s <statement sequence3>;
' B% t# p7 \& ` end; _1 {% }9 i; r$ N9 |
如果分支比较多，用：
' a' l+ p% G1 }6 p% F4 w2 [' k inspect <expression>
1 q t6 k- {* B4 v when <constant_list> then! H' W& }; D8 G8 {3 ~' h
<statement sequence1>;
' ]( \* U0 R/ A$ J/ F when <constant_list> then
6 Z* d1 n$ O0 p/ b9 y; I9 H <statement sequence2>;
/ H( [% S& l% y; ` k ...
# W, A- |' J5 y) g else
# X' g8 H3 T) k: ^/ g3 J( s <statement sequence3>;8 j4 } j/ U6 N4 Q: \& z7 O
end;
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0 g! v8 L1 v0 s4 F( ~5 A2循环语句. O1 q/ q8 k' E& a
(1) from <statement sequence1>
! G a0 ]2 u3 p4 F) G& Q until <condition> loop
# Z/ A ~0 E H; y0 N <statement sequence2>;$ J/ b4 l( ?" Y0 c! w8 i
end;
, m' T$ |+ J {# t (2) while <condition> loop* v; Q, q' O' [! a
<statement sequence1>;
3 ~. S ~! a9 |6 z% |6 j0 Z4 S end;* B* }& _# T# t, `" O Q. i
(3) repeat . _( P5 z9 B3 L6 V: l* C
<statement sequence1>;* Q. ~: a: z" b& U9 D e
until <condition>;
4 C; {( }! M) w/ k) q! p4 z ?. A (4) for <condition> to <condition> loop7 f& X) k+ f4 U
<statement sequence1>;/ l& t, I4 @: @# M" L
next;' m+ P0 s; t) q! P2 T
3中断语句
* _; w8 g: D0 [# s. J2 p) P waituntil <condition> prio <integer expression>;/ j- U" x: K+ v/ o4 o! f6 d2 {- K+ I3 I
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以上为常用的函数！+ f5 _/ Y( |0 M4 x0 L2 ?: t: k4 E
还有很多，如有需要我把资料发到你邮箱里 0 K; a$ {0 ^3 l' X
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