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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
& [2 V1 Z5 L5 | if <condition> then. P5 E& ~. b' @. {/ H
<statement sequence1>;
$ a2 V' X/ R* T. h, _+ `& \+ ] elseif <condition> then& ? {+ x) ]" Q! b3 ?
<statement sequence2>;# W& c6 I6 X; m% F* j2 `1 \
else
4 ~$ U( r5 y6 A2 w* @1 d <statement sequence3>;
# f' z/ i. Y Z3 j end;
5 I9 Q4 W3 o! y1 {& x* i1 n& q" M9 _如果分支比较多,用:4 T9 [- z6 A$ a& F2 N+ U8 s \8 ^
inspect <expression>2 ~) W% I- }& z' y1 l) x
when <constant_list> then
0 `# u( u8 B' H& g) a# ?+ w# _ <statement sequence1>;5 i0 L, J; H. D- T7 S# ]
when <constant_list> then
$ F4 u4 ?+ P7 j5 b d <statement sequence2>;
9 [2 u& I5 y$ E ...
; t' X+ \) A3 Z, T( | else
0 I) m+ b; g) Q <statement sequence3>;/ C; H. u* }/ r/ k/ `5 E, E, j
end;/ b6 I. a, n4 Y% N( r1 C
: i5 y8 U, i3 B$ C) Z( f! a7 h2 T V2循环语句- p6 Q1 d) C0 j, `* l
(1) from <statement sequence1>7 j |8 ?* B" x! J) |6 `7 E" H
until <condition> loop
: {6 r+ _" b9 q* C# ]+ }& s <statement sequence2>;
6 Q: C( Q3 J" \: y# A2 v4 q end;% m, O* P: j1 s9 B" x1 |. u
(2) while <condition> loop0 r( B/ P* W- a3 w! ~
<statement sequence1>;
( X4 Z4 G/ X$ k/ U* y [ end;
" ^ C9 V$ q8 H# ^ [ (3) repeat - e! J# p: K& t- Z0 C) _
<statement sequence1>;+ ]2 B! U# {; G m
until <condition>;& S9 N( F8 W T. J5 h, X" L
(4) for <condition> to <condition> loop
4 Z; `: |1 E- h) q9 c+ X <statement sequence1>;; Z8 @5 A3 G; F/ f- B2 e
next;
* q: W+ j2 O2 h3中断语句
1 U3 n. X; L( Z, L' T waituntil <condition> prio <integer expression>;
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以上为常用的函数!; r3 M4 u6 P" B4 K
还有很多,如有需要我把资料发到你邮箱里
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