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发表于 2012-11-13 08:48:12
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1判断语句0 V( j/ a# e' g9 E- \# h) Q/ o
if <condition> then
8 ~& ^% p1 V! I. p <statement sequence1>;/ N3 E7 m, f( _' Q
elseif <condition> then
6 I7 T2 P. _7 r' y' Z: i <statement sequence2>;
' O0 J/ ?) i2 ?* u& L1 { else
7 a5 E8 g: D7 n1 u <statement sequence3>;8 X. N8 ?( J2 c Z
end;+ \5 R0 y* ^+ q7 u7 M
如果分支比较多,用:
L5 u+ i/ w2 |6 R, Z! q inspect <expression>
1 l0 |" B8 r6 k6 d) K when <constant_list> then
5 {8 l% d( J/ A8 H, s$ f <statement sequence1>;( |+ ^9 I! T% M! E6 S
when <constant_list> then4 f* |1 b2 `) c4 L
<statement sequence2>;
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else
5 k! j$ q9 N' U( a: `1 o* F <statement sequence3>;
! L+ D+ E3 K& X# `+ Vend;
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2循环语句+ u! }1 H; F l; `$ s2 f8 a* o* n
(1) from <statement sequence1>- f* ^5 M4 L5 r# }
until <condition> loop
" R" j# Z8 {& b# P2 r/ [ <statement sequence2>;8 j$ X3 D* s. p7 m! q" Y# D
end;. f0 t* }3 y' Y
(2) while <condition> loop& V$ D" ^' I9 N3 Z( l$ i
<statement sequence1>;6 V& E: K! o0 J7 o3 w/ J/ E2 S
end;
" i, T! \9 b: `8 Y- q (3) repeat
, H5 E- b0 m& L* d <statement sequence1>;
! {; k+ R5 b& y% J2 R' B until <condition>;) d3 t R$ q* K
(4) for <condition> to <condition> loop
9 f: u9 X( G# \" B <statement sequence1>;. n9 q7 V" s. c2 B3 y0 A5 H2 E4 A
next;
7 P3 i g4 p8 t. u' A3中断语句$ O. ~% m; o/ y( [/ i
waituntil <condition> prio <integer expression>;
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以上为常用的函数!: _' x$ S+ ?2 W5 l
还有很多,如有需要我把资料发到你邮箱里 - I. R( d6 `& s
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