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发表于 2012-11-13 08:48:12
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1判断语句4 d) C Z! z; p V# ^; r9 p! }
if <condition> then* R# O1 z6 _* X4 y( a! h
<statement sequence1>;
$ ~1 o2 o o; q# W1 a! s elseif <condition> then1 {5 n/ K; D0 N# z, H3 @
<statement sequence2>;
3 j$ F2 ~" F- W6 n; b9 e else
! n0 }4 p* R5 w/ _. i- z' t$ {) K <statement sequence3>;
$ v) C N+ }% y, _" H P end;
7 `- w1 P5 D; [如果分支比较多，用：5 j% u$ j6 U$ ]7 W. D
inspect <expression>& A7 u1 A- Z0 s5 h2 V5 D% o/ W
when <constant_list> then
- p; s2 N+ n& x' ~- `+ v <statement sequence1>;
1 @ t8 W3 F) n( W when <constant_list> then
! r# }' w) n9 J: `; e" ~, q" o <statement sequence2>;5 s( m2 w: t/ n2 l
...
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<statement sequence3>;# k2 _- \+ g' p
end;! g- r" b4 g) e- v, d
2 \7 ]6 k0 e* U3 A8 |2循环语句
9 f7 M: y/ E: {( j/ Z, O (1) from <statement sequence1>* C; X3 h/ [1 S% r- r
until <condition> loop
9 m$ C* k5 _; V/ k' h3 E" D! ~! O. C <statement sequence2>;
, ]# G& p" a8 k j( D# N1 c t) n end;3 ^2 X& Z* D* j! @2 q+ h( l
(2) while <condition> loop
# i2 Z8 k x8 K# G/ ^4 h4 {7 e9 ~ <statement sequence1>;6 ^3 y/ k4 f* @1 Z6 x
end;' S( D; o+ g2 D j7 H& N
(3) repeat & e! \- n7 O0 ]; \8 `8 T
<statement sequence1>;8 m' U/ Z+ q6 W0 O3 Z2 x1 i* H
until <condition>;
, x& V- K5 U" @" y' l: o$ N1 M (4) for <condition> to <condition> loop
9 h7 c$ f6 ~ @6 }7 |, M <statement sequence1>;
Z s$ U! R; ?# R next;
7 l. n2 N, p. {- L3 K' J; p3中断语句
+ x5 f) M7 x5 K- ?7 J3 z+ M$ ]$ R waituntil <condition> prio <integer expression>;+ G/ ~9 p$ t3 X, F3 u' G' L) o% @- f6 b
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以上为常用的函数！
* {$ a; [, R$ G# u. p还有很多，如有需要我把资料发到你邮箱里 , h8 l4 ?. F# K2 x; V" ]7 }
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