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发表于 2012-11-13 08:48:12
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1判断语句 f5 b6 _1 P% |3 W% C- F
if <condition> then
. v- W! u }$ Z" q! R9 |" F& |% m <statement sequence1>;
% \; [4 v% a: L4 k% v elseif <condition> then( a, C! y6 H, }. J* ?- Z7 Y
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多,用:
( @' b5 D3 S( w: S$ E. C inspect <expression>
$ E2 `, V, j! n0 |4 a% q: ^ when <constant_list> then
% ]" y% P' C% } <statement sequence1>;; {" x0 w1 v' J* Y
when <constant_list> then
2 ~2 L& G8 y3 F: U <statement sequence2>;" i& K/ ^ \$ Z! O M& p9 P
...
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<statement sequence3>;' I7 c9 t W5 ?
end;
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2循环语句
; U9 t+ n5 U7 F7 Y+ {# G( |* w) j (1) from <statement sequence1>3 j2 b7 b1 O# g; X( H [* A
until <condition> loop
0 `$ D$ f! A l! A& _7 u& g6 h6 d <statement sequence2>;
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(2) while <condition> loop
+ `* P3 v2 _. T2 A. F) z <statement sequence1>;# {3 T$ ?3 |6 H& _5 I8 x
end;
; B2 C8 A7 r; ?: r* g9 L& ` (3) repeat
% U5 O$ C% A- M* O3 U. \( q! R9 ^* { <statement sequence1>;( \+ J& Y# `8 o. L \
until <condition>;3 D5 _/ E+ z! d0 _! R
(4) for <condition> to <condition> loop& b W. d- w$ {
<statement sequence1>;
0 h8 R- ^* ]* A5 ?' F, d, f next;
# } n, h' D4 m/ G0 L' z3中断语句+ r" R; M0 ~, r
waituntil <condition> prio <integer expression>;7 f5 o. @; f$ C& Z0 C8 Y
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以上为常用的函数!
8 }. X$ ^$ b8 S1 `还有很多,如有需要我把资料发到你邮箱里
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