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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
J) X) ^8 e9 W1 X- {: k if <condition> then
\; _$ T. m9 P, r7 n <statement sequence1>;
- E, h a% \# a elseif <condition> then( \2 c3 l) e! ?: Z. u
<statement sequence2>;
6 g3 N q' S8 p* a0 t! @ else
; l1 `- P! ?( B/ k <statement sequence3>;* y& p r0 q6 {- ^8 b" P
end;4 W8 z7 y. T% e/ O8 U
如果分支比较多,用:- G) ^2 E6 `! { C; d8 q
inspect <expression>6 _ ~. ~ E9 B/ T7 P
when <constant_list> then: Y6 X, Y% \+ K
<statement sequence1>;
7 u2 B5 d4 a5 u( Y6 r; r when <constant_list> then
/ |# v0 u0 w+ T3 H) V- U- }" P <statement sequence2>;
' O! x2 q& @) E. P( b6 ?' S ...
; l: R% D! M( W# w9 v, q7 i% ? else; y5 P4 \! @, p7 L$ F+ s7 ` A
<statement sequence3>;
r8 D- `3 e5 ?8 q8 jend;
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2循环语句
$ `$ P; D: {4 u Q (1) from <statement sequence1>1 e# K2 h( ~" F5 v$ F8 E
until <condition> loop
. O) D4 M5 D* z <statement sequence2>;
3 m* G1 z: K# p' j4 R2 y3 O end;8 y3 V% q7 x' M5 R, S. t
(2) while <condition> loop) z1 j& F+ I6 H) @1 k7 |
<statement sequence1>;
7 M0 {* Z. K% B/ i end;, x! o: f* t, e0 N# Y; S
(3) repeat 9 S/ O& f+ ~$ U$ T7 t2 N# u
<statement sequence1>;
% m! i. {; r! e: w+ d: X0 i; I+ R until <condition>;
0 ]' o& t# E1 a# ^" } (4) for <condition> to <condition> loop
5 T; p& G( A% I7 ^( x6 ^- F <statement sequence1>;2 S4 k1 c1 W3 c! Q2 f
next;: q" N( q, R, y4 M9 E3 J$ o
3中断语句
4 v: i1 q1 U# w" t7 G# s8 E! f waituntil <condition> prio <integer expression>;) b3 K, M; V8 ~- [9 |3 Z
8 H, {5 g1 W0 b+ f x
z4 k8 Q* t+ f* R" y( ~& x以上为常用的函数!
" Q7 g6 N9 }) F还有很多,如有需要我把资料发到你邮箱里 : n9 L6 ]8 s8 C% P
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