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发表于 2012-11-13 08:48:12
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1判断语句' ]$ T& V/ ?4 q
if <condition> then
$ l0 P+ U; R2 \9 M/ v" k <statement sequence1>;
U9 f& G' L4 ^! U elseif <condition> then/ H1 W. `- w4 i" U4 u. r
<statement sequence2>;
/ O) X4 n/ X+ b! ~3 }. N else
9 Z% I7 ~# b, |+ ]) S <statement sequence3>;& T9 p& C# r) U
end;8 \$ G, P. p; I) R# z8 Z: x
如果分支比较多，用：
2 j$ S9 l* m3 A3 b( N4 H inspect <expression>& x. q) Y4 H7 m7 C
when <constant_list> then9 @: P( M6 `; j/ g
<statement sequence1>;
6 R/ |( n, e+ }1 S when <constant_list> then) _+ c( n$ b, O- Y! F
<statement sequence2>;& D8 ?( L3 y# H% z: B9 f3 v% [
...
! {+ R" d7 @* f& k( t else
% B/ }- Z5 u. ~: r0 m' s! F <statement sequence3>;
L8 P6 @$ r/ s3 a! ]' S" K( l0 wend;7 G G, h6 D5 S$ Q
) G* f0 u- T( _: X5 y; d: p/ m7 D6 P2循环语句5 \' J4 b2 S. z' j: x3 j# e
(1) from <statement sequence1>
3 M( O" g |6 y9 c% }$ ]* v# _% R3 } until <condition> loop
4 C9 C7 {. b; d8 @2 E <statement sequence2>;/ L$ \6 t0 K& q+ Z( U% N7 ?7 }) }
end;4 v7 X; ~3 x9 f9 k
(2) while <condition> loop
: P7 x1 |* o6 C. h- w# {% h <statement sequence1>;% Q' q1 a4 x0 {5 t" k/ T$ ~
end;
. N8 s$ s% h& C' X* } (3) repeat + C5 Y3 v9 t9 L( P7 y
<statement sequence1>;. D" Z9 B9 r/ m z9 q
until <condition>;
& F: B, f2 T! Z/ ~9 v- O& u( t (4) for <condition> to <condition> loop0 j% \4 {' o7 P7 [3 p
<statement sequence1>;& ~! y' a/ j' x& W
next;
F$ _) m$ X* g+ n0 j( V3中断语句
{2 P0 o8 [' E( V" b& D! L7 q waituntil <condition> prio <integer expression>;8 T+ J" p4 U! D: p+ f% d
' S5 J' J. y g9 L. q' e4 u/ ~$ {1 P& \8 q; V9 d* j+ ~
以上为常用的函数！
, ^7 f/ }+ ?( O) z; m还有很多，如有需要我把资料发到你邮箱里 # J1 h' h9 T! G2 |- w
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