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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
/ V1 g+ C# V* V |- J0 ~2 a" P) A if <condition> then$ s" h. ], D* v% B; G$ R
<statement sequence1>;% R/ W2 t. M- L" H# ^7 g' F
elseif <condition> then
& M( O$ Z- v; S& ~4 ~- Z <statement sequence2>;
' w2 q: R4 X1 U' D5 f" G) e$ } else
$ Q$ u% T7 h' `1 J; g& G# K <statement sequence3>;
9 x, ?# W8 E# M- `4 | end;* d/ p* @. t5 G2 o/ n
如果分支比较多,用:
% `2 [9 X2 h: e" t& a inspect <expression>
- w4 p+ v) T5 C6 w, k when <constant_list> then* T( W% u/ k/ L* S9 y! A8 y" z# G9 ~
<statement sequence1>;" r( y/ z) b& u2 I* f. j
when <constant_list> then
: j- l( _7 S: n$ { <statement sequence2>;
5 e1 f7 [7 Q9 b ...
! r/ Y" H, q6 O; e$ I else
0 ]8 @- {& D8 U4 d <statement sequence3>;2 A; ?2 l% |. }) G6 }
end;
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2循环语句
1 h% o% F* H" e) } (1) from <statement sequence1>
& \ E s3 ]% W: Q9 B( E) f until <condition> loop0 V/ E4 h6 R/ X7 z; F1 e
<statement sequence2>;$ U% {( Q/ Y$ k$ G
end;+ L8 r l1 n/ I, F/ f4 y2 A
(2) while <condition> loop h6 K. ^" B( |7 k2 [
<statement sequence1>;
8 m, {$ X8 {" m7 o; Q& D) e7 L end;
# U& {) P8 |. M/ [/ d/ Q (3) repeat ( z1 I" x1 j5 u0 `- H$ c5 [
<statement sequence1>;' H+ v' I% i! a. B1 c3 d+ Q+ E
until <condition>;
0 @) x4 F4 J% E5 j/ d6 \$ b (4) for <condition> to <condition> loop E' D, s: X4 j4 s
<statement sequence1>;6 V3 F2 H- i1 Y# |3 @2 z
next;
8 ]2 m# g+ S, W' v2 x( M3中断语句
2 Y) M( [) b# y waituntil <condition> prio <integer expression>;
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' P" d( L+ i" K% L1 A3 j以上为常用的函数!
8 @7 a( i4 D5 i& e3 M/ _ Y还有很多,如有需要我把资料发到你邮箱里 g9 F* j% T! q) S1 _6 z d
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