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发表于 2012-11-13 08:48:12
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1判断语句
. ]% _9 _8 x* S" ~. u( }; e if <condition> then. M, i% r, O+ X
<statement sequence1>;
. V+ \. e/ \: l elseif <condition> then. S2 K, ~3 [: c3 Q+ M8 K; Y
<statement sequence2>;) f/ n( ]5 H4 {4 I, U; i& ~
else
, W1 }) j0 b1 c; p$ | <statement sequence3>;' t, r5 d: k- A- | @: e
end;% i% e7 C6 |3 J
如果分支比较多，用：
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when <constant_list> then
6 \( t7 H& k$ P/ x <statement sequence1>;% ?2 S1 t2 Q. p2 T- U |, G
when <constant_list> then
3 L7 U4 ]) D& s( U <statement sequence2>;
7 u# |& l B# Y! L' D2 }$ V y ...
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<statement sequence3>;+ C3 ]* y; c3 Z- E( E
end;; a; B2 W# m1 Y- `+ s( ~
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2循环语句# E3 b) ^; s* h
(1) from <statement sequence1>
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<statement sequence2>;; a$ {7 X- X" l$ x, ^2 X# k
end;
+ A- |3 T( D: j# g% V9 v (2) while <condition> loop
" L, q" D& N2 P% W <statement sequence1>;
# M& O( ~# ^6 |& D. z" D' U, o e end;- Q6 ?/ Q5 r2 H) f$ J7 O
(3) repeat 6 g+ C* {6 `4 w6 ^6 s# X5 t/ D
<statement sequence1>;
+ F/ r# m, i! p% m' t8 F until <condition>;
& e3 [+ a6 h% |8 E. w( i (4) for <condition> to <condition> loop; G t0 g! _, k3 `1 e7 Z
<statement sequence1>;) U4 D% y& M. h0 t; ?8 I! r
next;
# b: P( M! H2 f0 C, @7 G9 i3中断语句
2 G- F2 [5 w9 m3 J: Z waituntil <condition> prio <integer expression>;% c! q: N1 g- h# w0 Y
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; w5 O7 G) w5 _4 Y以上为常用的函数！
1 ^% Y8 l# g8 i0 {还有很多，如有需要我把资料发到你邮箱里
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