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发表于 2012-11-13 08:48:12
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1判断语句/ L. G! D5 F1 ~8 H
if <condition> then
. F, M+ B% J, n' J" G <statement sequence1>;/ j5 R$ R) u4 g/ C2 a6 E
elseif <condition> then
8 m E( t4 K2 z <statement sequence2>; S- p3 _% r4 q5 X _" Z7 c
else
" W5 E' \2 d. z# q <statement sequence3>;
, D" f+ B& e: B' ~7 t/ { end;
N9 l2 u( c4 i如果分支比较多，用：
# P# L% q& {4 r, w& G& P inspect <expression>) m6 q- T2 u4 Y: p( n4 f5 ~9 ?
when <constant_list> then: g3 h* a' f, c6 _5 O& a
<statement sequence1>;
) c I$ D0 Z" j! x) [/ q9 f when <constant_list> then
5 f- g; J. t" i <statement sequence2>;# l0 X* l2 O1 {1 B: t
...
% A( k/ r( @6 [3 ] else
7 l! P w/ S6 i' A2 ` <statement sequence3>;( ^6 m6 r/ e" u/ X' E8 B p. t
end;3 N% P3 ^ W/ j- E8 W1 {
9 R0 _" F1 |& U8 q2循环语句0 A1 S2 x8 o+ i, C- W
(1) from <statement sequence1>, ^% n2 x+ Z0 l' b, o2 h3 A+ y1 l1 b! N
until <condition> loop, C$ `2 q! D# o7 s0 [7 c
<statement sequence2>;
0 x7 O1 @0 L& ?* O end;) ]2 z) Z/ s$ A2 S
(2) while <condition> loop
3 Q( S" b9 i$ Q4 H& ~& K$ I: u2 C8 V <statement sequence1>;2 C1 k% u5 ?2 f% C. i
end;; a9 ^8 e- O+ ]; D( l6 B
(3) repeat
) T0 v* c# m4 `/ }: N <statement sequence1>;
& z1 _; P4 `5 B" m* Y {+ K until <condition>;/ K- N; ~/ `" _9 S2 h2 a9 R
(4) for <condition> to <condition> loop
4 A* w( J E5 E7 q/ L& f( o <statement sequence1>;, K- J- A% {$ R) X: }
next;
& i" U3 z: d- T7 ~9 w+ E6 G! d- ^$ ~3中断语句
8 F; g b) D. _: A( ~) ^ waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 _- n T/ k o$ F
还有很多，如有需要我把资料发到你邮箱里 . b# y5 L8 z- q
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