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发表于 2012-11-13 08:48:12
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1判断语句, @: R. p$ i. L! I& A9 G
if <condition> then9 M4 y; ^8 z( Z3 _
<statement sequence1>;+ _6 w9 a u+ x5 n) z
elseif <condition> then6 @- _ n* M4 `2 I1 j2 q
<statement sequence2>;
, b# S, C6 j8 d; q9 L$ w else
# A6 a' @; R/ N0 T6 K5 k' X <statement sequence3>;& {9 t7 W; i1 e# E5 p
end;. @1 Y- m3 ^3 Q! B2 H
如果分支比较多,用:
" V- s! d: {; B" w# @+ s! [ inspect <expression>; \% Z" D2 h$ v7 E
when <constant_list> then. [$ j6 ]7 m$ s4 }5 m Z7 @7 R0 u
<statement sequence1>;
4 V4 x @, | \1 k$ J L when <constant_list> then
: R( Z/ P4 c" o# B7 O$ u <statement sequence2>;
j" V Q. x, ~ ...
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<statement sequence3>;2 v: R0 J6 `& }( _& T
end;( s2 W; `1 _, ]' u2 w
1 Y" G: Q$ n2 X; f& l5 h2循环语句) N6 j9 W8 N$ d, w, a2 \
(1) from <statement sequence1>% i3 [% t1 o) w. k1 C; q
until <condition> loop
& B. b& {$ U# N8 ]3 M. X <statement sequence2>;
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(2) while <condition> loop0 A: W m7 U# O" K6 ^$ C- g
<statement sequence1>;6 t; S* S2 m/ L6 G) S; K1 q3 J
end;
' b V0 d8 R1 }: `: Z (3) repeat
- _7 O0 F! C: Z: G1 k2 _3 h <statement sequence1>;4 l- ]. x! ]( O/ j4 N" C
until <condition>;) x& B6 P( b s% [/ @5 v1 i9 L
(4) for <condition> to <condition> loop1 y! K I6 B* O. f6 B' }
<statement sequence1>;" ~: |3 x+ t/ h
next;
+ B3 j/ q0 D* h3中断语句
/ A7 @' M% \5 M" d; f* a waituntil <condition> prio <integer expression>;! y6 J0 G" p/ L* K: Z8 h: c
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以上为常用的函数!
/ y. D5 c8 b2 a9 S ~ n/ l T3 U还有很多,如有需要我把资料发到你邮箱里 1 e- E% w+ y: @ S; n
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