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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4 Z/ [% g4 K' I6 O5 u& c) p9 h' X
if <condition> then
0 S6 Y5 W, b* @5 z <statement sequence1>;$ B" j, }; a4 O* ]4 R9 L r5 ^
elseif <condition> then
! a. y [: T$ W, W% Q% y& e <statement sequence2>;6 M( S1 W P- [9 U2 M
else
" M2 @! A/ u5 Y& D <statement sequence3>;
4 T. H6 X8 s7 d4 O2 e; i8 u/ [ end;
) g# N: X7 x8 S9 ~: O# {, Y' N如果分支比较多,用:7 _' X/ Z( G/ K4 N* m6 y
inspect <expression>
9 S8 n8 c2 y5 o" M when <constant_list> then0 I; {6 r1 z: Y# r) d4 I+ @- I" H
<statement sequence1>;% R8 V8 X& _8 ^4 J# Z' s: Z
when <constant_list> then) D* `& L( F$ s4 F: J/ C
<statement sequence2>;
; q5 K! s2 o; Q7 |' y: l ...
. ~1 k- W3 r& r1 P: M) @0 {( | else
+ r' Z3 T- y: Q" L* j# E <statement sequence3>;; I) T! f% B" v+ E8 T5 ^
end;7 ^: X( y. r5 g5 }6 Y
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2循环语句
, N. F' i8 \. A/ m (1) from <statement sequence1>
2 q/ L0 B8 c: B: x8 G( s until <condition> loop
) \& M7 z1 Q1 R9 L/ @, T <statement sequence2>;$ @8 m! l! N7 w9 ?' D: ^) n1 Q( G
end;$ H1 L& u9 _) t& U( ]
(2) while <condition> loop0 g8 `" a6 |2 J8 [
<statement sequence1>;: e# C; h. n# X7 @* J2 S, r" {
end;
8 b# ^3 F8 M3 y6 p (3) repeat 7 o1 B# |2 X0 U. Y$ i6 |, Z/ Z
<statement sequence1>;5 a; @( a' y1 ?
until <condition>;
8 a* K: \( S0 b) C8 }+ P% | (4) for <condition> to <condition> loop
) A( g; r0 s2 l* a$ N <statement sequence1>;6 s6 y; Y* k* g
next;* O: D: ?! V" m" i+ I: Z. L
3中断语句
" t5 Q% j- ]2 ^ j waituntil <condition> prio <integer expression>;
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+ l; o l" ?4 e
8 R# g \9 h/ r1 T6 K+ f0 |以上为常用的函数!
# _# t ~: A/ I$ x2 {6 s5 O还有很多,如有需要我把资料发到你邮箱里
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