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发表于 2012-11-13 08:48:12
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1判断语句
# j& J; a2 ?% ?5 [ if <condition> then! K8 z# B1 \+ Y9 T
<statement sequence1>;
5 D- C; S/ p, h3 j elseif <condition> then
4 |& g7 z8 ]: P8 c! W+ } <statement sequence2>;
8 j w4 Q/ N4 R8 C9 C$ E5 `: o else
3 e" h) B4 `8 w# i5 S <statement sequence3>;
* M) Z. J) j2 v end;' }: N4 `2 d2 `. p5 q9 o" ?
如果分支比较多，用：
& ?5 ]/ N$ S# p# u7 M inspect <expression>2 n; v( X! o( h9 {# j8 c
when <constant_list> then
$ m) l/ v6 Y3 [( i4 ` <statement sequence1>;
/ ?: f. h8 T' a+ b h when <constant_list> then! f8 o/ m7 U4 Q# ^: L% R5 A
<statement sequence2>;- b* g- \( H) \
...
$ r5 D; \7 M& t: {, @* L$ o else
7 N9 h* Y9 o3 U% l5 w <statement sequence3>;
2 ^9 U) S6 x( Q/ \4 f2 t% g0 Yend;
& @% x* K( w# M. T$ R: _
9 w3 e* {. [1 p5 H5 ~( W2循环语句
: ^, j- }7 b, G' ~4 T3 _ (1) from <statement sequence1>$ t$ c: e6 C2 i! Z- l- o7 A2 S- B
until <condition> loop
% m& r. S, a! M <statement sequence2>;+ ~4 A7 N; h- H
end;$ z6 @& `/ P& W ?
(2) while <condition> loop4 d( w4 F/ D8 ]
<statement sequence1>;
) m5 \0 z2 F$ t; ~" V$ E, z end;: |8 ^+ S K+ L0 N% f' b! R+ N
(3) repeat
" d6 C. c U6 w+ o1 ^* X <statement sequence1>;# Y% w( m, a% Y4 l$ `
until <condition>;$ \ b6 V7 h9 v0 E& N- e( S. ~
(4) for <condition> to <condition> loop
2 E- f. w, }. _# [, m <statement sequence1>;- S: k0 h9 H3 J8 @; F# [
next;# R$ l! \" z, c2 i: Z
3中断语句
x( J* W9 o" ` waituntil <condition> prio <integer expression>;
8 k& c7 z1 z1 v3 I; f; T8 P) _7 Q; _) y1 v5 w9 S9 @- S
3 @: j& \ f( [& N$ r
以上为常用的函数！
' _/ N% D9 Q$ ^$ T* u还有很多，如有需要我把资料发到你邮箱里 ) a r' N9 Z, q+ ^+ ~4 X
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