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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
. L7 j$ \2 y+ v/ @ if <condition> then
! s: u, b0 D& }& U" n5 F' M r3 z <statement sequence1>;
1 o% v, U8 I- T4 L+ d, y elseif <condition> then
0 e: c1 N! V! A$ N, c: |# y <statement sequence2>;9 N. ]! e2 l: i Q V4 @
else , I4 ~8 n+ e: k% U
<statement sequence3>;# ~3 Y7 |3 B' T: c- l" e& A% @
end;
2 q3 v5 Z- d3 l5 [: r$ x5 q( M7 o如果分支比较多，用：7 `& @# b1 D8 E& f) m: g3 p( o
inspect <expression>
& P. s* n/ D7 M" S9 V/ m' x0 {9 t when <constant_list> then
2 ^$ y/ l" w$ ^9 i <statement sequence1>;- J' P A& P% V1 |) L7 }/ o' H
when <constant_list> then
) C1 a8 x& ? d& b <statement sequence2>;
( k( }; q2 \6 \) U( O+ m0 S* t ...
3 b9 ~0 T/ m4 y0 f else
* _; |# {0 W6 Y1 t( M <statement sequence3>;- [" V, A. F5 V- [8 |# [
end;( q0 C& h! T2 o/ }! R4 Q/ V
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2循环语句
" x) r6 g2 e: e# y/ T$ D) k# L (1) from <statement sequence1>( S3 ~$ Q/ L- T4 T; D. c5 t
until <condition> loop
# z8 \/ v5 c- A2 Z: d9 X+ J F) C <statement sequence2>;7 S/ T2 g2 q2 Z. | [$ r. \; j
end;9 g# I" Q! U. {! q
(2) while <condition> loop' `; X* [1 U0 ~
<statement sequence1>;
( `3 v8 E4 W# C end;
4 I% R9 l$ X# p4 T2 h (3) repeat
, G1 l, [4 |6 _+ [ <statement sequence1>;/ V6 Q. c' a4 u# n) G7 ^( x
until <condition>;' G4 ~. A% Q8 X
(4) for <condition> to <condition> loop5 C. d! M% n' M) p" H
<statement sequence1>;4 E0 C0 p* _' i6 A( M
next;4 z& W& Y) K( y- W$ E
3中断语句( g! E* ~/ L4 k* G. ^
waituntil <condition> prio <integer expression>;
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- o+ f# P" ?9 J* Y' r以上为常用的函数！
3 ~& T H2 P P. I+ ^* ~9 a( T还有很多，如有需要我把资料发到你邮箱里 4 a) o0 h. F$ e# t, f& {0 e
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