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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
4 C7 G! I; ^( m3 m+ I$ K if <condition> then" |, P0 `$ S, z) T) n( A0 r
<statement sequence1>;
1 o h% m) y$ J0 ]; W3 ] r# D elseif <condition> then& ^ ?& a4 b" B. ~ A
<statement sequence2>;% \0 O/ o7 E- R+ X( w3 t
else
6 ?7 m* f( I- A' v) g <statement sequence3>;$ ?+ i# }. [. u1 \; z! o
end;
; M3 ~6 i4 S5 p如果分支比较多，用：
' s4 L/ ^6 c/ e+ B inspect <expression>8 _! P9 u4 t Y1 `3 b
when <constant_list> then% z) f, R( f3 s$ e& H' n
<statement sequence1>;
, H8 f! d7 D6 U% {& ^. @/ t when <constant_list> then
5 q: b/ a6 U( e. o <statement sequence2>;3 m% l! o' d5 I* |+ N* ^. j4 ]
...6 y. b- E0 l) `$ m: g( E
else
6 @0 ~% `) e! q' v" u <statement sequence3>;
6 t1 v" o% M) H% ], Aend;
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5 x2 X3 C2 @6 j/ ^5 m$ i2循环语句
* ]" r. O) n5 y5 s* J2 ~% [ (1) from <statement sequence1>" d0 Z+ ~1 g# g1 S% u7 i" c; E
until <condition> loop: r" r' U! L" [ K
<statement sequence2>;
6 Q0 j, k) n- `( `" d' V4 u* X/ y end;5 P" m0 d( F# M- r3 u9 d$ f
(2) while <condition> loop! T2 k/ C) ~2 G4 ?2 _, z' }7 q
<statement sequence1>;. k5 c7 k: d4 A. V& D1 W0 T
end;3 d! T/ `+ r7 ?) e
(3) repeat
( w/ h" n* ? G: U w <statement sequence1>;8 T5 B8 e* I, V7 B7 j9 E
until <condition>;
* T# n# E2 B9 c1 x% y5 q (4) for <condition> to <condition> loop2 T5 e% b1 ^8 q( b3 R( K
<statement sequence1>;. H: F) N4 q$ ]" k6 D
next;6 j; o n0 F8 h5 [3 e- w
3中断语句/ d! ^& K! c: [; u
waituntil <condition> prio <integer expression>;( ?. H1 N X+ c b. w$ W0 a
$ E# _5 ^$ F4 y3 {" [* d! j0 g
6 S4 }6 }9 E$ h# \! o0 h E! @以上为常用的函数！
' |. E6 P! c& u- j# l G3 u( U还有很多，如有需要我把资料发到你邮箱里 $ L! _ ~; Q9 ]% f: `4 A
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