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发表于 2012-11-13 08:48:12
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1判断语句
& u1 m5 {2 i% @4 H/ E3 n5 y3 k if <condition> then6 U) a7 d5 G- a: b1 Z5 U
<statement sequence1>;4 P e1 y/ P5 x2 Z
elseif <condition> then
0 H: r# z Y# @4 I) I1 o4 A <statement sequence2>;
8 [9 \$ \4 P% R( R else 2 ~9 |( w# Q7 ^9 c6 J; Y" f
<statement sequence3>;* ?; Z5 r! g' z; {0 u" }
end;
4 m& U4 l) Y- g6 H如果分支比较多，用：
. [ P9 R! V3 f0 q4 q+ o! { a inspect <expression>
$ @$ y1 U7 s) N) [* O% d when <constant_list> then
, S7 V/ _& j2 V C( h0 S7 U, t+ n <statement sequence1>;# M/ @. Y/ F! ~
when <constant_list> then
: F4 j. j0 Z( N1 ~- e <statement sequence2>;# C" U' W. u& x) R
...0 a1 e3 B- X: [8 d6 W! N
else
/ j9 g) Y" b7 U' ] <statement sequence3>;
" J& t8 w$ {; ~9 Uend;5 L+ {- B9 F+ W, }9 a8 v% V& D" j o
6 k: M q5 F' d2循环语句
" ?2 q' T% |2 R. t. T0 U6 j+ V* v (1) from <statement sequence1>; v! U* X% d- d" p0 ]
until <condition> loop
; r6 q, \. t" o" `0 [8 T" c <statement sequence2>;
4 U; Z' z) u3 `# b; k+ m. A3 O end;6 |3 _1 s0 Y6 `4 j# n: z( b" D
(2) while <condition> loop! s5 Z, ?/ X% Q( h* x; Q
<statement sequence1>;( |9 M `) Z$ Y, G$ B
end;$ a' q5 j0 D; \+ V- y* Q8 y) B4 c
(3) repeat C, Z* C9 o: [) V7 P/ A3 L
<statement sequence1>;8 {3 ^- I& `8 v) s; F, G
until <condition>;7 B4 c b$ z4 w, j
(4) for <condition> to <condition> loop
* v8 u+ I! q% z { <statement sequence1>;0 l2 n4 R7 k, J" q
next;9 f" G7 a% F* F4 P
3中断语句) K5 X8 O4 P- E. ]( I
waituntil <condition> prio <integer expression>;& ?0 E {% b+ S2 ]$ _" @" S
1 b Z! @: o# m2 d8 y) C# j2 e3 ?: x: S" _3 Q! r) w% c/ ]
以上为常用的函数！! H: S3 ]4 z' d8 F# Q
还有很多，如有需要我把资料发到你邮箱里
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