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发表于 2012-11-13 08:48:12
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1判断语句; N" F5 C3 [0 @1 h6 [' l
if <condition> then
* A' o5 u. L. d4 a7 h/ A' C6 H% R& I' S <statement sequence1>;
& C) i( V3 t% k: x0 T. u elseif <condition> then) @) S4 J* i" S. n) E
<statement sequence2>;+ X4 Z/ `% ]( p
else
8 J; J4 Y( ?% {* {$ n! l( o <statement sequence3>;
! t7 L2 ~! w- c4 L9 Q- r8 B3 ] end;! i6 o4 n( `- z& h5 a
如果分支比较多,用:
( D6 V6 x1 p2 i7 N; D8 j inspect <expression>
( O: B8 H4 ?2 U; l) Z* {3 [# i when <constant_list> then7 t# C1 Z, X% i' e9 @8 @- s4 g( T& t
<statement sequence1>;. L% R. L- I W
when <constant_list> then
& f0 t# E* ^" f2 H" G* h <statement sequence2>;
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else
o- h- z! S4 z# \: m& [; M% E <statement sequence3>;
% F3 X) P1 q6 w6 Y5 f7 r) A+ Eend;7 {& Y6 M: }3 u! P
3 v i4 w, |8 i8 {2循环语句
9 J$ b2 n' w+ Y1 M (1) from <statement sequence1>! Q% P, S& I5 z6 b) M. i
until <condition> loop
0 D$ X( I( ], W: r, c7 n( w <statement sequence2>;& c" A; S! m2 L
end;
D1 G& f" c, u/ R) i8 A (2) while <condition> loop. Z3 Q5 ?) Z4 y
<statement sequence1>;
5 v& e) ?% b, J' X end;0 n$ b5 {! \. h' d/ _* j
(3) repeat
5 l7 Q% ]% X* i* ?9 o <statement sequence1>;
& D+ r* X! p' A8 t- t until <condition>; O6 f! B6 h. W$ p8 ]2 K
(4) for <condition> to <condition> loop! V! ~9 d3 U; E. b# Y( [5 F
<statement sequence1>;9 ]$ A" p# B$ w5 \% u9 H6 O- |
next;
. T5 e1 p- L5 R, X; R& n3中断语句
# y. R/ a6 ^6 y+ U waituntil <condition> prio <integer expression>;, v$ _: O+ o L) I) g+ l A
( i* g2 `7 Q5 S- W8 X4 @
" [" v- |' o! P以上为常用的函数!# s- F6 \+ ?5 V7 H
还有很多,如有需要我把资料发到你邮箱里
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