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发表于 2012-11-13 08:48:12
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1判断语句
" }7 B) s' G' Z* I, T if <condition> then1 `4 _5 k2 Q9 `5 X& w
<statement sequence1>;
6 \ J- \* ?) o( [( Z+ P! F! A. I elseif <condition> then
8 g; ` v% l5 A9 M$ Q" F: W; { <statement sequence2>;" @, \9 G0 c6 `* R
else # J4 i5 ~7 U/ O+ x1 f& h
<statement sequence3>;
% `% }$ [7 a1 L3 p/ Z9 C end;7 I" I7 w" e. k q! R/ e! S
如果分支比较多,用:* Y) W' H& c9 N1 z6 B1 p" T
inspect <expression>
6 W1 b- k/ {' v! n+ l3 H6 _ when <constant_list> then
$ t' A' [1 b9 V# p1 g9 c5 l4 g <statement sequence1>;
2 g& Z0 n, S, x2 M0 E when <constant_list> then* n( N/ s8 y1 M6 l) t
<statement sequence2>;
3 ]( z# F+ @; h+ O' n1 D ...
( `. D4 O7 b' [0 D, G# V else
" H O; r e: E, a& F7 J <statement sequence3>; u* M- D# d7 d: L; X6 e
end;
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2循环语句1 B2 ^( Z1 g: o4 e
(1) from <statement sequence1>3 C3 @, _3 h$ Q; V" c1 b1 R
until <condition> loop: y8 f0 A" \4 C4 q6 y5 Z
<statement sequence2>;
& |5 d, j5 L, M" q4 B end;: G* ]7 Y1 }6 ?3 p- M
(2) while <condition> loop
( X B; n& Y4 m) A' @/ m d- p <statement sequence1>;: G/ X7 E( }' K4 R7 t' Y8 t; A
end;
: `1 A# c) G7 _. N' o (3) repeat
3 `# j8 u a3 Q E. u) z6 f2 U <statement sequence1>;
8 \( W$ z: R) N until <condition>;
& `& J# h# \9 q" h) Z R! b7 r (4) for <condition> to <condition> loop
3 @& z1 d& ?) x, P: S! r <statement sequence1>;
3 a" {. r" d6 J0 F: P next;' u, `- j& n8 w0 r8 r. g
3中断语句. l$ W# E# t$ {# {- ], q! G
waituntil <condition> prio <integer expression>;' y8 } Z# ? S* {6 m
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以上为常用的函数!
: a! l1 |# j1 p) \4 T2 C还有很多,如有需要我把资料发到你邮箱里 ) U G' q0 b5 `7 k
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