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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句3 ?- Y4 J- f P G
if <condition> then
. V( _) `3 t, V/ @ <statement sequence1>;- _9 b# i; L# }0 i3 R8 K: D, a+ ~
elseif <condition> then
3 ~8 m. j' _; W <statement sequence2>;
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<statement sequence3>;
+ q6 l, G$ f5 M& c. M end;2 t. O$ v$ ~8 `/ \, u& a
如果分支比较多,用:
+ n9 Y9 D3 F2 R( I inspect <expression>
, N" i# `$ M1 S when <constant_list> then
$ U+ h5 ?# S9 k# v! m <statement sequence1>;6 E6 Y7 s9 \" v7 u% b( ?
when <constant_list> then
" Q# b% P$ b/ A/ S# l; y- c( v <statement sequence2>;
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else! E. G$ S1 d* a/ @. F$ b3 D1 C
<statement sequence3>;
+ I! C f" |; b' r7 w gend;
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2循环语句3 D; j# O2 M0 J \
(1) from <statement sequence1>) }, L7 c0 m" f9 _0 p/ E5 I! X8 Q
until <condition> loop
* a& L4 V' ~ @; ]5 n <statement sequence2>;$ T9 x* D" Y0 j; j
end; Q4 ]& P. c; T) U$ X. t S- `
(2) while <condition> loop Q/ ]# p4 `1 @5 O4 T( U* |
<statement sequence1>;
" o4 z9 z- a q$ I end;
4 H. Q; ]" u: w5 x( A! @! _ (3) repeat 6 {( ?# e% D. r
<statement sequence1>;. S( K) X% F" l. [ z
until <condition>;9 B. D$ W `, Q' k
(4) for <condition> to <condition> loop
, _* w$ P( V9 z$ v <statement sequence1>;
: k+ `$ d. a9 l, [6 e; O2 I9 u next;' ?; v+ H: v Z7 [5 D
3中断语句
* F( q H* l. |1 [ waituntil <condition> prio <integer expression>;: _# X; E8 p4 F2 r f& ^
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7 Q0 J2 W' q; u0 w8 J* U, @8 g3 U以上为常用的函数!
" |6 J2 d9 I0 F Z! @1 B$ R还有很多,如有需要我把资料发到你邮箱里
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