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发表于 2012-11-13 08:48:12
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1判断语句' \- g! {1 G `6 C
if <condition> then
$ |: ^) a7 [, `( M! e <statement sequence1>;" _) X% M0 }" Z. a5 z. q$ L3 ^
elseif <condition> then
% k. Q0 @% Q9 T* |7 M' J6 P <statement sequence2>; @5 s% z0 ?0 O
else
- ^4 h; [8 s" v6 r1 J <statement sequence3>;
b( s: Q: y/ N: q end;3 K8 F9 ?) e9 p& N3 k- B
如果分支比较多，用：
, g: e7 C5 Y8 R1 u/ t2 G, l* Z inspect <expression>
4 z7 N# E; k& z% }7 m: a& k when <constant_list> then
+ Y! E Z( `4 K3 i- M <statement sequence1>;
% d( G- [3 }2 Q, w) z S) W u* i when <constant_list> then
# z9 D/ w2 g% H8 Y6 T <statement sequence2>;
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else
, D0 e* K) w& U. T% b <statement sequence3>;) r- V# F; A% ~( O' J; S2 }
end;" b. C6 [$ N( r3 F T$ e
6 |" w) o8 h. J) D7 T2循环语句
. B) u5 o+ h" m5 z (1) from <statement sequence1>, b. x' H2 c6 j2 ~5 r7 ^
until <condition> loop N1 H3 V6 c) f. h, q! N& X
<statement sequence2>;
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(2) while <condition> loop' }3 [3 ~ y. ~0 }3 ?6 Q
<statement sequence1>;; r# n5 \- i% R1 U% E8 g4 P& V
end;
; T' D3 Z i0 _7 V (3) repeat
5 K1 Y. H1 ^: e- m; p7 c <statement sequence1>;4 s1 h+ {. w j, ~, U9 e
until <condition>;$ z& w% ~( ]5 [! o0 d5 F2 b
(4) for <condition> to <condition> loop
! a+ ]" ] c' @4 b6 K <statement sequence1>;
" [ A4 c$ p% G/ x( _, I2 g next;
+ N" m4 d" f1 U! [8 Z* w3中断语句
q" L/ n( b# A1 H+ {3 D waituntil <condition> prio <integer expression>;
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# o3 S7 ^9 f" y# ~$ t0 B以上为常用的函数！
( C( k1 L% H$ a还有很多，如有需要我把资料发到你邮箱里 9 H6 U8 r: u, ?1 N, N$ n8 U
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