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发表于 2012-11-13 08:48:12
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1判断语句& p/ k: F- X( `: s. I5 H" N
if <condition> then
, }- d3 E7 \# b! J <statement sequence1>;
4 ]4 A: \) g, a9 X elseif <condition> then. n4 N8 l* w q8 u6 _, u9 I: x) t
<statement sequence2>;# {% S) v: r$ g2 R: W5 L4 T
else
* T7 f* I( S$ v( R* [+ E' c# R <statement sequence3>;) A g$ c3 o( g0 X; ^5 P
end;
$ N$ H4 Q3 x+ G- a' U如果分支比较多，用：
* ~+ j$ A5 J+ s* E9 D6 C inspect <expression>
0 J* a a& E5 q7 o. U when <constant_list> then& i% `7 x7 N1 [, R7 g9 L/ y) h& e
<statement sequence1>;7 H- ]1 H6 \ {) u. j
when <constant_list> then& G/ V; G. b: d# ]) n4 V
<statement sequence2>;$ x9 b( D- s+ c9 n# M; k
...
2 h" l( g: G" z, d2 U& P" R/ N7 f else
% ]7 ^, _$ y! A. b9 t$ X2 n <statement sequence3>;
/ _& z; Z/ H/ _4 m. s* F+ fend;
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$ a! n# V; ?8 p6 Z2循环语句
. X3 V; k* Q) e! o$ y (1) from <statement sequence1>
- a3 P5 q# Z% T4 g# N until <condition> loop
3 u/ ^& N: r$ P' V [( q& E <statement sequence2>;
- _5 \2 P* E0 ?0 K' d# { end;8 Z3 E2 W* U) u2 h# c0 N
(2) while <condition> loop
, M; s; E* M8 O' U! } <statement sequence1>;. N4 o1 ~) a& P9 l: N9 n# p
end;' }: A& h; N, j# r# n. n
(3) repeat $ ]8 o$ a( Y. `- N
<statement sequence1>;
2 N3 |" J4 Z# R/ h8 I until <condition>;5 B3 i7 k) A9 Q
(4) for <condition> to <condition> loop$ m6 ~! a' W1 e9 g5 d7 l
<statement sequence1>;: y5 z5 i C% v4 y1 d6 v1 n7 c- d
next;1 P$ [, ~, G1 Y. L& p5 w
3中断语句
/ ?1 r6 E6 E: i/ N/ N/ @ waituntil <condition> prio <integer expression>;
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: O7 F: ]% ~$ w+ X; m以上为常用的函数！% D: U' R8 c1 }. H
还有很多，如有需要我把资料发到你邮箱里
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