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发表于 2012-11-13 08:48:12
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1判断语句* K( G4 {& y! L, `% i4 T1 D" l$ U
if <condition> then
; @- |8 k7 b- N. D( Q' q4 x <statement sequence1>;" W. }2 n5 B' W4 @8 N! q/ j4 D
elseif <condition> then, o: U8 t& a! C2 g# T. g" u5 s
<statement sequence2>;
% s, c1 J8 c0 }7 p, f) M t else
2 H% h) q8 r* P a* Y! D: Q6 e <statement sequence3>;
/ ?: J( n+ {; }+ m+ _ P/ I! [ end;6 B/ e/ g8 z! h3 Q
如果分支比较多，用：
5 R+ W/ b& J( q3 G v( U inspect <expression>4 O# l# m0 n% ^! _
when <constant_list> then/ L+ U' K& j7 ]/ B2 ~2 r
<statement sequence1>;/ } A# V1 e. C/ ~/ ~
when <constant_list> then
! d2 G* ^9 S( x& q. }6 x <statement sequence2>;
! K& d- X& _* [0 E% c ...
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<statement sequence3>;" Y, ?: d& K, V* ^( h& M( W, B7 g
end;
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( O2 f1 L, c4 Q2循环语句 S" D. N q0 q, B8 v
(1) from <statement sequence1>
. p E8 t9 _1 j until <condition> loop2 H% T5 D& \! C/ e6 ?
<statement sequence2>;
# O+ x( n: R/ p6 m end;
( q1 \! e5 z( | (2) while <condition> loop& F# r9 t5 C; S& ]( d( I
<statement sequence1>;
6 D8 [1 F( a+ F# k1 h2 k- _ end;
* V( l a5 X5 S$ r (3) repeat
) b$ r4 {" `4 c8 m, f. B <statement sequence1>; a, R. k. J% Z
until <condition>;
1 z; l# L( u2 m (4) for <condition> to <condition> loop
* @6 Y. h+ M/ y% r2 C6 ~ <statement sequence1>;, E' g2 `4 q" w4 Z) v K
next;6 I2 ~& F$ L! o: g( h
3中断语句: j' e1 q' C7 W
waituntil <condition> prio <integer expression>;
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1 \; s; J! i3 y6 s2 H4 R以上为常用的函数！
% Z! T' ~! u& W9 r. r" k' `还有很多，如有需要我把资料发到你邮箱里 ) R, m9 U* g7 H! Y8 E0 b# G: ~
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