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发表于 2012-11-13 08:48:12
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1判断语句
% t% d C# h. s) Y- v9 L7 w if <condition> then
/ a- E, ?! ?1 U <statement sequence1>;
, _0 U6 Q+ q% U& J) w elseif <condition> then
) K/ ]: U' R% B" _ <statement sequence2>;
6 j8 d/ D% u1 s; H; s else 1 N+ ]# P% X5 q: N# N
<statement sequence3>;5 c" g. ~3 j( P% M$ E7 ?
end;, [7 x, b( Q4 b+ M6 c
如果分支比较多，用：
( Y* P# e* B8 y. R+ @/ g inspect <expression>
& G8 i+ c$ u' D- R when <constant_list> then" G' S2 F+ f. n! ^9 b% N
<statement sequence1>;
; N( ]$ n0 p8 z% L9 i when <constant_list> then: k$ o. F ^- [& A: C9 ~2 K1 z
<statement sequence2>;
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else
, p- a9 n' v/ |0 J/ e) q Q# _: r <statement sequence3>;8 D4 y8 K/ W4 @) V" w6 v
end;- |- \4 ~, M, [* j1 @
* [" E$ j9 d2 M0 S
2循环语句. ]/ c+ _: j" G) \- ?
(1) from <statement sequence1>
9 A- v8 Y2 N' W3 H3 a until <condition> loop
2 O8 L: H$ ^9 S2 u <statement sequence2>;
4 [1 t' }5 e: i. X9 D( n) x1 [! f end;, j {4 @% i& e+ p
(2) while <condition> loop. n2 N- B9 Z( f" [6 t
<statement sequence1>;, I7 L4 p4 u) o
end;
# z7 P: C- @% C" ]9 ^ (3) repeat , w5 @* y; K: D/ H
<statement sequence1>;4 y! Z+ P* N" t- G* R6 s: A, Q
until <condition>;
/ B* _0 a4 k/ t) j2 y (4) for <condition> to <condition> loop( ~; ~' C$ y$ A. f Q# N* s
<statement sequence1>;
/ g0 u0 J+ G, s, s9 i next;
3 J! {1 M$ t/ J% c3中断语句
* s8 I2 n+ \" |0 k5 e' U1 A1 d waituntil <condition> prio <integer expression>;' {7 v) U; ]0 \% Y
5 p8 p; m; C& f
9 J. S6 {8 c/ z以上为常用的函数！
6 L: ^; Y* _2 L7 k% A1 i; Q还有很多，如有需要我把资料发到你邮箱里 ) m( ^' F A: ?, i" B
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