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发表于 2012-11-13 08:48:12
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1判断语句1 G' [% J: s. H- r" M/ _1 x
if <condition> then
2 h: |& T2 v5 N- g3 _5 x <statement sequence1>;# w- j/ j! N- L5 v$ f1 Q5 |( i) I/ R( ?
elseif <condition> then: \) d$ e% d) X% s8 ?0 L2 M" F
<statement sequence2>;
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<statement sequence3>;
1 @$ U q( g% _0 s( n$ l end;
! _$ o; E0 l' K9 w1 Y如果分支比较多,用:% K4 t: P# L4 Y R/ P
inspect <expression>) r8 p6 w- M5 m+ k( r- o5 S
when <constant_list> then
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when <constant_list> then, ~- h; s: b P0 V& V2 ?$ O
<statement sequence2>;
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else
" A8 W* m) Y2 A% P( e( T <statement sequence3>;
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2循环语句
' D0 t$ {( S1 J (1) from <statement sequence1>6 {2 t) I. J0 u. p
until <condition> loop
5 G1 D6 \$ s. h" a <statement sequence2>;
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(2) while <condition> loop. p/ a4 b' r/ D" S" d
<statement sequence1>;- {0 ^: q3 b" x4 L2 `( _+ W9 F- e- U, u
end;
2 f: O5 y7 W2 U) m (3) repeat
" p. `$ S" l- ]( m9 K$ m <statement sequence1>;) n+ z5 E) U/ o5 D! Y
until <condition>;' `' i. a0 \/ y; E" s2 A
(4) for <condition> to <condition> loop
$ U" A' l; x5 ^* B2 j& d <statement sequence1>;
V3 W' Z3 k3 u next;1 T5 T/ W3 v- k4 q: S1 v) Z2 l
3中断语句/ [( \. i$ w. `1 G; g H
waituntil <condition> prio <integer expression>;! I m" N8 d- p4 k, M' F
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以上为常用的函数!
2 c! R& {6 v; c s6 G( v还有很多,如有需要我把资料发到你邮箱里 / f; M, G" x* w! @0 ^) l0 k1 q
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