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发表于 2012-11-13 08:48:12
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1判断语句- H4 W3 C! W6 d- q% F+ G# x
if <condition> then, Q8 v! D% F4 c2 |$ R( f
<statement sequence1>;% H2 N! d4 n- s1 H1 M% S b' X1 @
elseif <condition> then6 H8 z8 o3 u% X& r% ]& l. r' S
<statement sequence2>;3 C4 |" m6 y4 z9 u) c; s/ ~% W B
else
2 e! W' a; V. A" M, r T# ? <statement sequence3>;
0 }; }! X4 U; f! B6 `' {( P( C1 k end;
/ E" N& z/ }- W+ }9 i$ {* L/ R如果分支比较多，用：
& n# K( k) S. K1 Y5 l inspect <expression>+ c- @- X2 e4 y$ j( T8 Y
when <constant_list> then
: e9 r- e4 @2 S8 }- ]+ X! W* I <statement sequence1>;
2 W6 v+ L( u( D) q" Q5 L when <constant_list> then
( n9 ?# U. J. |# Z( ]- C <statement sequence2>;9 P0 F6 I9 m" o# O5 d
...& s1 |( p) a+ D& K1 r# a$ w
else( z; w* I6 @# U. k4 Y# w- D
<statement sequence3>;
t) ]! c( s, r3 o6 N2 l, t2 z1 O1 yend;
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H& P' d H' |0 C" |2循环语句2 I5 f* F# C/ c' C% P
(1) from <statement sequence1>
4 n5 f3 g( d9 ^$ i8 g# u [ until <condition> loop
; |( v5 I/ J" j. @ <statement sequence2>;5 U0 V* Q$ l w( N) y" d
end;- `" z3 H* U; t7 b* b( S
(2) while <condition> loop- Y" w( m& x( R' H7 f) A3 c2 _5 M
<statement sequence1>;1 m5 `8 _( Q5 ?) e, U( b
end;
Y$ l3 s* S" \5 } (3) repeat 4 b+ f; [, _, q9 h( V
<statement sequence1>;
) c, J6 O. Q+ D) A; X2 K9 u until <condition>;
3 a6 H# x* N8 c/ C( b! ^# f (4) for <condition> to <condition> loop
- z; r9 l: |! I4 G, G5 H5 X S5 D <statement sequence1>;
* m) Y& b) o9 S. c next;
1 `9 x5 o, ~' @" r" M3中断语句
! _$ ~9 i5 O8 H8 S5 t$ }4 L I; I- k waituntil <condition> prio <integer expression>;
# j* j: S' z, m3 ]6 z
+ Y. c& E" v) |2 i
& o+ f$ [2 q# d% ?" |以上为常用的函数！
% C2 s* `4 }( g; t" S. D0 ~还有很多，如有需要我把资料发到你邮箱里
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