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发表于 2012-11-13 08:48:12
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1判断语句. N$ V$ j+ T# a- ~; W
if <condition> then2 x& v4 ]" x4 ^/ z, ^( M+ m
<statement sequence1>; \6 M& _) B0 L+ A
elseif <condition> then
' w) M0 ^7 i4 s# h <statement sequence2>;
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<statement sequence3>;& r' s. G1 |; p0 f
end;
$ g( F- M: L# I6 I如果分支比较多，用：
/ a" H$ m: d1 I/ Q$ E" m! y; N inspect <expression>, ]! K/ N' a3 o! o( j
when <constant_list> then
3 H( U+ E% p4 C! i! G8 [+ ` <statement sequence1>;
% p S+ s; q1 `7 i when <constant_list> then
6 C2 Y; \. A6 Y <statement sequence2>;& J, {/ \. J$ {' `; S& [
...
! a+ f+ w0 C2 l4 K4 N else
# u. Z5 K9 h* w" r3 I2 u <statement sequence3>;6 `, s2 \$ ^* D& @
end;
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+ r1 a- W2 \& [( f; }2循环语句
* [2 A" V; }% c/ l [ (1) from <statement sequence1>: x& k# k& U( T
until <condition> loop% M3 q8 i; Y; K& E4 r+ A% |
<statement sequence2>;" Z( ^1 p# j# p( m! j4 t
end;5 Y8 f H0 S6 l( Y) }
(2) while <condition> loop9 z% x+ `0 U" x' J% _# a
<statement sequence1>;
, ~ y% s$ H5 Z end;
- m; L/ U6 q% ]2 } (3) repeat
! ?# \) ^0 h! `$ I& N <statement sequence1>;# ]. w+ C) e, v4 R. S5 }2 }) K
until <condition>;$ ?' C6 C* N% Y( L* l
(4) for <condition> to <condition> loop" {7 d/ V. [" |" I; c5 b( M
<statement sequence1>;
) ~. e7 P6 J) m next;+ T* b N( s7 ^, y6 t! D1 s
3中断语句
* K/ o* M# F( T: j5 F waituntil <condition> prio <integer expression>;# ?$ o1 O$ Q* X. T
- j, R$ C5 d: j5 j
) X7 Z. G2 s+ z5 k) |4 Q0 {以上为常用的函数！$ X9 E4 o3 ]! y
还有很多，如有需要我把资料发到你邮箱里 , i2 H4 P# {5 G2 o- F3 c
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