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发表于 2012-11-13 08:48:12
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1判断语句
! ~0 E' x Y' m2 U if <condition> then
- ?9 d9 d& `+ s) c$ { <statement sequence1>;* R$ X" o2 N0 W0 D& W" ?# {& N
elseif <condition> then
$ A. g$ _$ R- g- ^ <statement sequence2>;
7 j; S. B" k8 ]/ ~, W8 Z; b+ \0 T else
9 u' n( V, l _: ?9 M7 {1 @ <statement sequence3>;
4 u2 F" Y6 a& _# Q end;
: S$ [9 s3 F: d% I! a8 k7 f" i6 s如果分支比较多,用:
" T% t! p. h2 X5 x" a5 k inspect <expression>
2 x$ ~+ E) a, t- S- Y1 `( ?( Q when <constant_list> then
0 V2 l/ o7 j* R' M3 F- T6 | <statement sequence1>;
9 V; D$ l( q& A( @, ~ when <constant_list> then
$ A2 d, w* `5 V s: p F <statement sequence2>;
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else
, z, K- f9 v" f* M <statement sequence3>;) d8 d: `& | r" q8 X. m4 Y- R
end;. A& u) H9 T- g# ]$ }2 f% {1 N& G
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2循环语句+ V- X: c+ L: o, {5 E
(1) from <statement sequence1>
. m Y: T: m$ S0 c: U I until <condition> loop
$ K0 |9 j7 k, k! `0 _: O/ d4 F <statement sequence2>;
4 [& W7 G) T# G* l& E% S end;
3 R1 p/ Z4 G, G; l( v+ G$ v: o, x- F (2) while <condition> loop
( E! p% u+ Z6 s, w' d <statement sequence1>;
, Y, B: Y/ P! a end;# N8 z0 y& ~+ R5 S& I: u
(3) repeat . a8 E" q9 T# j& u' L
<statement sequence1>;9 u: G- R1 O' p1 f
until <condition>;% X/ ?) Z4 q; b* d4 |/ |5 G; m
(4) for <condition> to <condition> loop8 M# z) d7 S) o# E
<statement sequence1>;
: c/ t: w" }7 @- J next;
8 T/ U. B$ R* J+ _, f3中断语句2 K( F, v4 ]4 d& h5 n' L
waituntil <condition> prio <integer expression>;" }# K! i$ D1 N. C" E2 H
3 [" c* v4 l' B7 D
* J- l3 R" o& J& r* V% U9 n以上为常用的函数!
. t+ ~) ]7 r# ?6 b还有很多,如有需要我把资料发到你邮箱里
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