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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) @/ z1 v( H0 N9 F1 c. k. F
if <condition> then
2 w+ ?8 N6 h$ p9 Z <statement sequence1>;+ I! t' d( y, ~# O# F& m$ x
elseif <condition> then
0 ~# c) p( E6 u/ R7 B" h7 ` <statement sequence2>;
1 `! o7 y+ c! Y" r& y8 v else
8 X$ I7 _: d0 _ <statement sequence3>;' ^( U. U3 O, `6 D, u. |
end;# r, Q e1 t4 W/ A% @2 S! x, ?
如果分支比较多,用:
6 l. B6 B* m$ n) ]3 S inspect <expression>
! {' {4 |1 O. t: c9 [ when <constant_list> then& r: i8 Z3 m- I( C
<statement sequence1>;% c" C/ L; f: p* Z7 V: b
when <constant_list> then! [" [7 {3 e }" F9 T9 \4 F7 O0 S
<statement sequence2>;4 w. X/ X! a; s7 K3 S
...
0 o2 |* |1 S& V else! N8 P8 v3 W- \/ A2 ^% a
<statement sequence3>;4 p) o5 q5 g; H' Q+ j
end;0 L0 w( D! B* H
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2循环语句: f8 g' j' _8 U3 P: o7 F
(1) from <statement sequence1>( R$ k' O% J! s! G& v, y& a
until <condition> loop
% o/ |. J0 V7 a& `, b5 C <statement sequence2>;
5 O% T- n! p! E) T9 \* F end;
1 t9 S; ^% c. D$ N8 E (2) while <condition> loop7 A5 x& f3 j5 h. U5 {
<statement sequence1>;
) v8 ?7 m, ?9 l3 o0 F end;
7 B: i0 M3 e& i$ b6 _ (3) repeat * E1 }- R( e2 K, `. r7 d
<statement sequence1>;
* ]. N( t$ M6 u& a until <condition>;( n& W. n& F' N
(4) for <condition> to <condition> loop! u( \1 R4 r4 }
<statement sequence1>;
[; i: E7 d6 F: c$ T0 z' `4 x next;
4 p' q' p5 ~7 c' E# K) Q: [6 d3中断语句
S/ {+ K% z* R$ D$ a( F2 x& ?/ z2 b waituntil <condition> prio <integer expression>;# Q+ B# `* c' E' `% N/ w+ X
% e, \5 }! |- h7 e
6 d0 |( x ~+ s以上为常用的函数!
% c _5 |( I2 B7 q还有很多,如有需要我把资料发到你邮箱里 % R( H8 W( U( f7 B! r
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