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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* c9 n# r, l7 B: x% P7 A
if <condition> then
" m8 S* A! V1 \5 m! x <statement sequence1>;
6 }, _: t9 c& L# L- \* b( h. G elseif <condition> then% O% u- i( d, a8 o3 `4 \
<statement sequence2>;
* @0 L1 a8 P4 d, g else 2 b# ^0 P% ^' X. g9 z
<statement sequence3>;3 N0 N' T/ M4 O" D0 b
end;
2 j- o. J5 I$ ]; G% v如果分支比较多,用:% @6 J- }- O0 p, n4 r
inspect <expression>/ @ q2 A7 Z, u; v M$ N) }/ [
when <constant_list> then- F8 U$ n2 C9 U b; {# S
<statement sequence1>;
, i) M, T3 \/ e9 C% Z when <constant_list> then, ] w7 ]4 ^. X" v
<statement sequence2>;
, Z- h( k/ l, T4 t! o4 }" I+ X4 T ...
/ e7 H) X8 P: C! J# G& } else
4 b! t3 h4 ~9 J1 d" F8 C8 v <statement sequence3>;' B2 X; G; ~' u
end;( c. R' P& W+ N" K( w0 Q
; d3 G+ I7 X' Q& Q: l2循环语句1 s+ V" d" j- x' B
(1) from <statement sequence1>
) @9 Q! j2 ~% N- _" e6 H m until <condition> loop
2 f) [. ^& @8 R9 E <statement sequence2>;
* o: z, K1 L. n4 Y end;9 [% B- Y. B" U! Q- S
(2) while <condition> loop4 e% d+ a: R1 _3 g
<statement sequence1>;
6 U; L" w/ E8 B; W end;6 D6 V3 W i, w2 ?2 e& O2 B
(3) repeat
/ s" i1 u6 k; U/ ~ <statement sequence1>;$ }9 e6 G J- I- g- w: n
until <condition>;! W% a7 [4 S7 P& ?4 E! B+ P
(4) for <condition> to <condition> loop
' s6 B9 Q1 {9 Z1 f" L <statement sequence1>;& V/ |3 F4 t( U9 B, c, ]! e; T3 I
next;& n3 {# J* n# X1 G# h3 m1 \
3中断语句/ C, `3 m1 ?% W% d @
waituntil <condition> prio <integer expression>;
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以上为常用的函数!- O( n3 N; Y" w2 a+ ~0 m4 {
还有很多,如有需要我把资料发到你邮箱里 3 e6 ~5 a3 g/ i" Q3 G4 l% j
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