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发表于 2012-11-13 08:48:12
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1判断语句
3 f1 S- e& \3 ~ if <condition> then% b V2 l) Q6 [" p' `/ c
<statement sequence1>;
; j" ~+ o) a8 b! g: ] elseif <condition> then
, U* h J1 e$ \ <statement sequence2>;+ E @6 @2 r U5 u, U; J* o
else
% \# O5 M: l X. C+ e3 H <statement sequence3>;. V: A" H% `+ L
end;2 p, h0 f' ?: S7 q$ W
如果分支比较多，用：
- l8 K! f# J: R3 J; g( F inspect <expression>
& E8 w4 E/ ?+ s% W7 j when <constant_list> then4 Z( |) F4 G. w+ Q4 Y2 M
<statement sequence1>;
" ]& n7 H9 k, a2 a' \) A when <constant_list> then
8 {& o2 E0 k; Y4 }4 V u8 W' _% m <statement sequence2>;+ i# C( A8 J& ?5 e( E0 D
...) x2 o$ R! ]3 j; k. ~7 |9 {' R
else
9 R3 p6 r2 z5 M( G- n( e7 M0 z7 X) g <statement sequence3>;
9 x7 S6 u* \0 S. x! zend;
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2循环语句8 E9 n/ p- S! G, m9 H/ u
(1) from <statement sequence1>
5 }( ?' \) h7 v7 J9 x$ |' Z0 I until <condition> loop
; U: u! H0 M9 p$ e& @ <statement sequence2>;4 N" j/ X9 N0 z, H8 k. p
end;
0 s3 }; Y3 t+ q& i& V (2) while <condition> loop3 ~; g# u0 _. |* e
<statement sequence1>;! O( C+ G5 T. c9 p N1 i8 V
end;
& K0 {; u% D7 F% c/ v (3) repeat
5 ^; Y' @! l% h <statement sequence1>;# ]7 a( y# v% B) Z+ x
until <condition>;: \% Z, V% _. |0 v! Q
(4) for <condition> to <condition> loop
1 d+ s7 U3 r. A' I; C) p% G/ m <statement sequence1>;
) W# {- ~0 r3 o" \. F next;
: O( R4 n6 L. s. O# G( U5 Z4 r, O3中断语句% k4 i4 [# F& c- W
waituntil <condition> prio <integer expression>;2 G9 A$ s. y$ @& \ D- L9 ]
+ c% l/ A/ q# @( U
/ D. `: A% m. E8 z
以上为常用的函数！" u3 S7 l; R& U o- _" m
还有很多，如有需要我把资料发到你邮箱里 7 u& ~; \6 _$ _: Q5 C. r
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