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发表于 2012-11-13 08:48:12
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1判断语句8 Y, V( a$ `# V0 U- L* _
if <condition> then
5 T% g; S D. X; r! S <statement sequence1>;
# U9 t. h% ]- z3 G. `, Z9 H elseif <condition> then& B5 \! y6 L, ]0 o5 K4 A( D L
<statement sequence2>;$ J' V" r( G: M) m. n8 u
else
7 _6 b! ~! r, S$ ^) H4 d0 x/ f <statement sequence3>;
/ `1 Z! F# W3 W end;
+ h" j/ `& s7 g- a2 S9 P4 O如果分支比较多，用：
5 y" F2 `& |8 |! [ w4 v inspect <expression>
8 g/ J; ~( A: E! t5 L2 ]( u0 S when <constant_list> then
1 x4 J; t0 A. J <statement sequence1>;! _! j" H& N1 ?. v( H
when <constant_list> then
8 q9 P9 M h% p2 Q, V* o <statement sequence2>;
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else! J `% r- b* J& X- V, S9 }
<statement sequence3>;* S+ l+ d3 }- n. F# S, ~
end;
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2循环语句5 n- _# X4 D2 X) X5 y9 r3 @8 B
(1) from <statement sequence1>% D1 T/ V& l9 Y `) }
until <condition> loop
6 q( {5 I& D6 H, W" i <statement sequence2>;% f5 w2 T9 S) o8 `9 x" l+ w
end;& [. f2 X) ?) P3 N3 \1 a
(2) while <condition> loop6 e7 \0 M3 p4 t: {' X
<statement sequence1>;% t- V6 }% F, P# l1 j' r. {
end;
6 T2 F5 W0 a- h) M- i: D: z (3) repeat 6 y j' O Q$ h: v6 W
<statement sequence1>;
: [ p. |$ k- W+ x' I0 ]' e1 b$ ?5 z until <condition>;+ m( x1 ~3 E+ |4 `7 E
(4) for <condition> to <condition> loop! W3 I- g3 ?/ l
<statement sequence1>;
" V: i' U" N+ K$ r6 ~ next;
8 u. v6 p' I0 j3中断语句
, f- f8 l$ C- s: v+ n( R' I waituntil <condition> prio <integer expression>;
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以上为常用的函数！
" {" }+ t5 |; J8 W W还有很多，如有需要我把资料发到你邮箱里 7 Q: v% L j/ ^" I- _7 V
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