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发表于 2012-11-13 08:48:12
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1判断语句2 \# l1 J7 b- h' p8 Y, L0 L: N
if <condition> then- H) A) ~8 r$ Y) y
<statement sequence1>;2 K' |+ O4 w' ~. N2 t
elseif <condition> then
* ]* ?0 \! l k7 e5 b/ f3 ~. B. m7 _ <statement sequence2>;7 ]8 P/ r) B0 e* G: b
else
. k n l- E8 n6 y' Q4 U' ~ <statement sequence3>;
( {6 I% @/ L) K: i7 _ end;
/ v( h) l( @# d& s3 K如果分支比较多，用：
; H2 y" o, Z6 v% w' d5 K inspect <expression>
' S$ O, s( q3 Z" p! U% U+ B when <constant_list> then- L) _/ Q2 m1 \9 X
<statement sequence1>;9 D. Z! V# |1 B6 l$ A [
when <constant_list> then- B6 Z" |' H# z
<statement sequence2>;
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else
% X+ ?/ g3 l4 p1 s4 {/ ~% _, I <statement sequence3>;
4 j |6 Y% e% ?9 @. y$ v" q5 Dend;$ H0 N" c& {9 N: T
* u& C6 M3 {1 D% I4 R4 M. k2循环语句
- u y5 m/ }, c0 L$ {: E (1) from <statement sequence1>1 ?/ P, Q B" z- M9 x# f! e
until <condition> loop+ z; v- j% {' A# R& t. ^. e2 q
<statement sequence2>;% ^( j/ ?+ o# ^
end;+ F0 a$ J5 p6 D( N! A
(2) while <condition> loop4 o6 [( c* v/ F# d+ Z; M
<statement sequence1>;
, F5 K6 y" f! T3 B% m7 k9 F end;
8 r+ D) G6 j5 R! z7 C (3) repeat " L# L! q+ r5 ]7 ?
<statement sequence1>;
! X5 F" H Z7 {5 U6 l" n6 L until <condition>;
$ d! j0 M: [* y2 [7 o (4) for <condition> to <condition> loop
% g' _- [0 h4 G. z7 n: t: P <statement sequence1>;% U% w J+ l+ A, g3 l, R# g
next;
7 J5 Z6 i1 J9 P3中断语句3 ]& E2 v j; c9 j% T" C
waituntil <condition> prio <integer expression>;
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以上为常用的函数！9 q+ O( L! |! t" }! S
还有很多，如有需要我把资料发到你邮箱里 $ d6 u1 y( p- b! W" ^5 ~# e
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