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发表于 2012-11-13 08:48:12
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1判断语句
0 E0 X4 |% ^3 U$ `6 T if <condition> then7 [: b% k* ?* w( C+ b+ {
<statement sequence1>; b2 S E3 s- o! s( |/ `
elseif <condition> then+ O4 J2 t# V( C
<statement sequence2>;
% D, a* u( q% q2 O9 V! U else
. s- F l0 T6 W+ U* K0 W9 y <statement sequence3>;
& D- | s0 w7 A end;
$ {$ i" t! w( m) W+ W如果分支比较多，用：: e# ? h& n7 ~# }$ B
inspect <expression>8 F l# l6 u9 [$ V6 x
when <constant_list> then
( i$ t; K1 U4 P9 }7 j5 L- |0 L <statement sequence1>;
- ~9 [) K, a! o8 i8 P when <constant_list> then
: n7 p# o( }! Y0 W <statement sequence2>;
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else4 }2 J6 \: l+ E) E
<statement sequence3>;
+ h1 z$ c( h! Eend;% A. M* u6 _4 l f* t, |7 d& b
# T) Z, a' x/ P7 }: j3 V( p2循环语句5 m' I/ W. b3 _. z
(1) from <statement sequence1>& c( J" F4 ^; Y, v6 Q9 D
until <condition> loop6 A6 ?: W' I$ ^: K5 p4 p& L7 H
<statement sequence2>;
5 l6 x9 _+ Y& _/ Y+ J% \4 a end;
# n( Z# C3 \* @' r0 x) H (2) while <condition> loop! Q( d. R7 R5 v& J8 u' U6 t
<statement sequence1>;
$ {3 L0 g- \; I+ L- X6 q9 o0 k, p end;& ]7 j; |+ D" f- u
(3) repeat # ~0 ~$ d' E; ^0 R, e. H
<statement sequence1>;
' Z2 C! P5 }) |5 j2 Q' h8 D& i until <condition>;8 t6 @$ a5 p1 o
(4) for <condition> to <condition> loop
7 B. q+ @3 x0 ^8 I( z <statement sequence1>;
2 j- l4 _( k Y* V+ o next;! ]( S" g( f; x6 W) K
3中断语句
! J6 u3 I7 X7 z" |1 d) o waituntil <condition> prio <integer expression>; `9 m8 j1 `# P2 m O( f* Y6 T3 I
2 {" H9 f5 N: Z {5 F; `) h
0 g. Z: g0 `) [1 K- g以上为常用的函数！
/ X7 n/ v9 x- h% k, v# X* S% N还有很多，如有需要我把资料发到你邮箱里 % R3 a9 w8 \. s) I {; n
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