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发表于 2012-11-13 08:48:12
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1判断语句: T3 W; M. j( Z+ j7 x) I
if <condition> then( e4 C% X6 H: u
<statement sequence1>;: Y& T# ]- |( m3 e/ b; C% O
elseif <condition> then1 y) @" l" e4 C- E u% T
<statement sequence2>;
, u. z$ }9 A8 r3 h else
+ p1 o5 [5 X& o/ q I8 K5 X0 e <statement sequence3>;
& U7 e/ Y% Z9 n7 D D end;
3 Z" t" \* n x& N# \6 d如果分支比较多,用:
1 m! X5 o8 N7 | w- h inspect <expression>, h+ K1 i; B# {" Y- _+ h
when <constant_list> then
) q. m- t' @. ]$ H# @5 @ <statement sequence1>;
- g& `, a) G. A8 |* ]. l, z# z when <constant_list> then
) @/ l3 O( Y& z) C% R <statement sequence2>;2 d. K5 i( f: d2 M3 J# F" Z2 u8 F7 M: `
...! O/ H' U) E* {) k. \
else
. Q, ~4 d* [' ?0 m5 _& x <statement sequence3>;
! O6 ~' w- {' U: L; z9 t& ~7 o% |end;( Q5 N# a9 u, @9 x. C( P* K
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2循环语句
9 L/ g1 o% p& u5 a) d0 _ ^ (1) from <statement sequence1>8 n% W4 o; ^: L) J
until <condition> loop
& D' E a! c C+ ~5 y# V <statement sequence2>;
$ ]# E$ [3 s c; S( W7 Y/ F" ^: \ end;
2 ^1 T# }3 Z1 C9 |2 m (2) while <condition> loop
8 }, C% l- {- m6 f+ K% }9 t2 C) f <statement sequence1>;
; P( y3 p) \( R c4 s0 E ~ end;4 ]: P( y! C1 ]
(3) repeat
. a, {4 E# X2 U. D <statement sequence1>;
: m% l3 c n7 ]0 i until <condition>;- d' H- l' `- w" U: ?9 a0 F
(4) for <condition> to <condition> loop
& w$ m& z5 T8 W% z- Q& v <statement sequence1>;
- ^4 ~- l6 Y" k9 q1 v next;
) l! F; O; _; p/ L; B' g/ w3中断语句& B5 D- J" Y! C; y1 f2 g, c
waituntil <condition> prio <integer expression>;
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以上为常用的函数!$ X/ R* G& t8 F% r$ ?7 i8 O% p' x( M
还有很多,如有需要我把资料发到你邮箱里 2 n/ T, C) \$ J! r
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