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发表于 2012-11-13 08:48:12
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1判断语句+ t; I' z; q7 ^: R/ J9 l
if <condition> then7 R& X+ @! ~: N) |! x4 R
<statement sequence1>;
! h& c# v9 ~; p- n: o elseif <condition> then
( F4 ^% [* A# j! l <statement sequence2>;
! u# r' x( k) t2 s1 \ A else
+ N& W" N, g* Q/ g& a <statement sequence3>;
$ x# W6 _. ?) v: E4 Q" C' v" B end;
& q. }+ ^" B* O. n+ ?: f S' D如果分支比较多,用:
h; [0 P/ k) G) j inspect <expression>! H( N' X% Z! J: p
when <constant_list> then5 ~, n0 U2 w: y, q: v
<statement sequence1>;
/ W, f# s- y% j4 E2 D. _ when <constant_list> then
! J: K/ J3 ]1 P* s* l! ]2 P <statement sequence2>; l8 p( O5 j' r5 d2 f* {
...
. ~8 A( r+ _8 X* ^+ [ else
0 ^, X1 D* Y( G/ U& S4 P; ? <statement sequence3>;
6 y! ^$ j" i0 p- q nend;0 Q9 \- Y( E5 |! k
% I; n& c3 i+ V& Q: i' s8 q6 Q$ b: B& Z2循环语句
' y4 k6 A; r2 }+ H6 R+ J# h (1) from <statement sequence1>
: `. _6 j' z9 B/ a+ i0 j until <condition> loop) \; c5 r- t, V) T
<statement sequence2>;) V. k$ x1 {# ^1 A8 V; {6 w
end;) q( S+ q1 H6 J1 z- K6 {5 i
(2) while <condition> loop
+ M6 A7 z8 P: O$ g <statement sequence1>;
4 K3 H& x" i4 }% j4 h end;: R! W: Z0 Q% i) S4 @+ Y
(3) repeat 8 r. s4 N( P2 p4 x n* Y4 u
<statement sequence1>;3 F0 Q/ P* n+ X* [1 Y9 p8 K9 o
until <condition>;
" u4 B6 O4 Q! E4 i6 i' ` (4) for <condition> to <condition> loop
; ?+ k$ D4 S$ U' n6 r* u <statement sequence1>;7 _1 ?1 v- D% `$ t3 l
next;
5 y0 R4 o, c) W9 w0 G# p5 R! I3中断语句9 w' ~9 X7 t& i' R3 L
waituntil <condition> prio <integer expression>;' t- M7 l4 m/ P' h; ?$ ?4 [/ m
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以上为常用的函数!
2 H. M3 d6 u4 S3 H0 u7 r还有很多,如有需要我把资料发到你邮箱里 , M" }8 a( w' L& m5 _( Q
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