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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
j2 ^" i& q5 j- X1 F, U8 Q if <condition> then+ g- i4 L7 a! R
<statement sequence1>;
9 k# L* S" F4 ]; K; g' S elseif <condition> then. t/ K, B8 |+ o ]! r
<statement sequence2>;: P' n* C6 K" D, u# P
else
3 t1 S* X1 K! Z5 \9 [% N' g+ Q <statement sequence3>;+ M, d5 Q$ G% p, u$ [$ e9 b
end;9 o9 o% g9 h L: U
如果分支比较多,用:/ b& u' n9 i$ @: o8 u
inspect <expression>
* |6 f! I. H7 S4 r when <constant_list> then
" I1 W4 |& Y" d$ {, h( `" ? <statement sequence1>;( a3 e9 z( {6 n* g& t/ g
when <constant_list> then& W6 D; L) d$ I5 Q# j
<statement sequence2>;
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else# {- S; O" a/ j
<statement sequence3>;
( S2 E/ E( u: ?# r* ~ @8 kend;
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2循环语句9 O' L8 K) X3 U( b: g, |9 ~- [/ j8 {
(1) from <statement sequence1>% O' q& Z4 |4 d a# y/ j
until <condition> loop4 R1 r3 O; F2 P; `
<statement sequence2>;# s- ]* R0 c/ m, p( |
end;
( ~. f9 K) k* k' s: B$ V (2) while <condition> loop
! {* i* ?! z% `4 h' E( A# L <statement sequence1>;* [- ~, |5 E1 f
end;4 S3 p( S# C! H8 }' R" p
(3) repeat % j0 _, g# J, V S$ E. N. `0 [
<statement sequence1>;
1 O2 b+ \1 x* K$ C: L, r; h3 G% g until <condition>;
; b1 a4 u: t0 T. D8 B3 s; `, K (4) for <condition> to <condition> loop0 f' {( o: u: M Z, R
<statement sequence1>;
9 a# A9 J. H' w8 h( @ next;& G1 L' ~3 G: r$ ~* a
3中断语句
7 q. a B: c6 K. \+ F+ M- { waituntil <condition> prio <integer expression>;/ ^( B# _* G' ^- m) i, B4 C+ P
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* {. M, Q& E; @以上为常用的函数!. z1 K" I+ r$ e# g
还有很多,如有需要我把资料发到你邮箱里 8 g7 j! q; x- p6 q" d
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