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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
) s& E; T- q. a1 s c5 ~ if <condition> then
# v" D( o8 B6 ~; ?3 q# l <statement sequence1>;
7 _, |( ~1 t5 D! t, l elseif <condition> then
0 N. R' ?3 Z0 W o/ L/ F <statement sequence2>;
6 q5 b/ j0 @7 b; f/ m* L else $ ?6 i$ Q3 L0 m- ?( _( I
<statement sequence3>;
F$ R0 P0 R# E) x/ u' @ end;
% V" B- G. p; V9 l+ G- V如果分支比较多，用：
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when <constant_list> then7 N# l/ l, Y9 s" c" J
<statement sequence1>;
9 F) R( r W" }4 h when <constant_list> then
" v# O! C/ z1 p( Y# L: i <statement sequence2>;# I9 D- X/ [8 E! r0 l1 c
...# L: v' I5 r! p) ~/ k
else
' }5 i5 y8 j9 x; \ <statement sequence3>;8 Y$ I) p8 S4 q; h
end;
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2循环语句
2 Q& J, z' Z8 @# D# L% N (1) from <statement sequence1>
I' F* F' A# ~% b% x$ I until <condition> loop' C( P: W0 w3 _. C: D. j9 y
<statement sequence2>;6 d* r5 P7 n5 L# \ ]1 T0 A
end;' h% I7 ]$ E& J% A2 O; d
(2) while <condition> loop |% F/ Z# F9 E. X: v. d: Y7 u
<statement sequence1>;
3 g9 D/ \! ]! h end;
7 t! u$ p8 E8 S (3) repeat * S5 n) i: E& M5 U' Z: H
<statement sequence1>;+ B0 v% N3 E6 L7 L* `8 B
until <condition>;
6 c ?5 m/ c& y: l7 h/ D0 d3 ~ (4) for <condition> to <condition> loop
4 W, c: i! o8 G6 }2 t <statement sequence1>;, Y( d1 g6 U3 n! |3 X8 u7 V* y2 P
next;# y2 A. u* e S- k. }! [$ U
3中断语句
8 f1 {' V& c b& P2 k waituntil <condition> prio <integer expression>;
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以上为常用的函数！
$ p; V, X; y3 o还有很多，如有需要我把资料发到你邮箱里
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