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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
) E! m8 c9 ~& H2 j4 z) X2 v if <condition> then
# y8 e5 o+ f& p( [; | <statement sequence1>;. K( g) y6 v: v$ R! F2 {
elseif <condition> then
. o" O. a& e2 m( h& } <statement sequence2>;
7 R# o& l# m+ @" _2 L else
7 ~- B0 k/ r/ S% P, x3 V' y# [ <statement sequence3>;% K4 u( O& s( t& \: ~7 ?
end;
; h P% }8 Y7 v$ N2 |! P如果分支比较多,用:( P0 T) x J5 ^. o. J3 M8 s- u* {
inspect <expression>1 J. u: c! Q9 c6 o# z5 y8 T8 G
when <constant_list> then
' N/ ]0 t$ b; Y( r6 Z4 M+ o: _7 P <statement sequence1>;$ j @- ?) e$ D, q- O5 O& d, k0 c
when <constant_list> then
; H' n: C$ O3 n9 o <statement sequence2>;2 f4 Z6 U2 r4 L( T8 Z2 Q
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else
3 r4 f% f& j. t- ]! ` <statement sequence3>;
( M! n5 S( K, S- `! X6 \* D. nend;
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2循环语句7 l5 g3 T2 Y/ ^5 [
(1) from <statement sequence1> ?+ q" H7 u! k! g) M; P3 n
until <condition> loop0 [% w1 o5 j) s
<statement sequence2>;
6 c9 n7 a/ y' L7 ? end;
3 u1 @3 b8 h& f5 _ (2) while <condition> loop
' k' c# @2 R: ~# _! X+ j# B/ E <statement sequence1>;5 A" {2 `9 @1 J0 _6 S2 I! C0 p
end;. g" V1 k" w/ p- N! ?
(3) repeat % j( a: A$ k% L3 R3 {" i
<statement sequence1>;
, j7 p" ]. T- f9 U+ J7 Z. X& { until <condition>;' z: c+ a/ Y! D
(4) for <condition> to <condition> loop
% D G1 F! H4 C5 o3 L6 e! X5 G. E <statement sequence1>;
' x4 X5 W; W- r+ J: t9 m6 ~4 a next;
/ @5 R& Z) |6 U9 B! i3中断语句
$ N$ P3 _+ D& Q P$ N# s1 q waituntil <condition> prio <integer expression>;
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6 {% S+ l$ u: H: H% _& w) @. I以上为常用的函数!! z7 E; X: D+ e: k1 S
还有很多,如有需要我把资料发到你邮箱里 : x& C q$ b( D# P
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