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发表于 2012-11-13 08:48:12
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1判断语句0 r9 |% W: O2 A2 w0 v3 l
if <condition> then
$ X" `" b- P: h- O% x <statement sequence1>;
& p' b3 |4 i" ~, Q7 Q( K elseif <condition> then% d& S9 ^& y' n/ c2 d$ l7 D
<statement sequence2>;4 ~3 `4 S1 l; ~* z& a! [* Z& t
else . i- }) r2 Z5 _1 K K6 G' B
<statement sequence3>;' H$ B6 p6 p( d6 y0 g$ @
end;
" G* P9 ^4 I. o8 T* E' ~如果分支比较多，用：
' v. f3 A) [# z8 C! C( ~ inspect <expression>
- G, b9 \+ \5 F when <constant_list> then( L2 ]9 H" G* L
<statement sequence1>;/ N X" _/ Q/ H# X) S
when <constant_list> then% I+ U9 P' X. Y
<statement sequence2>;" }- k, C5 P* f T1 U
...
( j# ]6 B" Z: i% Q' y else
# m* D! v! B+ X2 S <statement sequence3>;
8 O0 o) ~( |- U& j% v: n( xend;
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& c7 }& q' }+ m9 `& e7 e2循环语句9 s. G" j+ i. _9 x# V( ]
(1) from <statement sequence1>% [9 y3 a1 n7 _, D9 W' F7 t
until <condition> loop, r4 n* |# A/ V. v) h4 P, J
<statement sequence2>;$ P: B; s9 H! ~4 c9 ]# H: _
end;
& k% P. M8 G) Z (2) while <condition> loop
/ L; e- b2 g' i) N# C) \) l% g <statement sequence1>;2 d/ r& ^& j1 v' k
end;1 ? H/ N5 K5 t) A9 K& h
(3) repeat
5 n1 S7 C- N1 P: u4 C f <statement sequence1>;8 G# e* A8 k$ `" s4 s5 w
until <condition>;; P ~( e! T& |2 s3 N
(4) for <condition> to <condition> loop
& x7 ^0 E6 W% V <statement sequence1>;) U }/ I! J$ s2 s2 u
next;
, k. \4 k/ l9 E8 O% |3中断语句
0 K% [7 M i" V& i3 ` waituntil <condition> prio <integer expression>;, f+ q% w3 Z+ J5 R. B1 q/ F) }
: M# w+ C) g2 O4 @6 I- Y6 U2 U! _/ ~% {
以上为常用的函数！
1 G) e* ]/ a5 P, Q6 i' z4 o7 K还有很多，如有需要我把资料发到你邮箱里 7 j3 b2 R4 a. _" m
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