|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
- f, y7 T3 x! [, d- r Q) ^$ J if <condition> then
9 L. z+ ]0 h+ c' h <statement sequence1>;, L j# ?2 D# u9 b# F8 e, |
elseif <condition> then
& _/ ~8 c0 z" H- b5 B <statement sequence2>;
6 p% K3 M7 `* U4 D else 7 W5 Z! l0 r2 m9 ]* J
<statement sequence3>;
. b7 M0 E; m- T! Q7 r. O end;) ]$ ~: n: l% k* u
如果分支比较多,用:
. M; x3 s& y. Q. O' m7 r+ G: a inspect <expression>( E( b1 j% l$ D" i, a, r
when <constant_list> then/ T3 G+ c2 s, d& D8 ?
<statement sequence1>;
9 Y* b$ b4 k% X. n when <constant_list> then* I0 z" b& T6 q6 {* T H6 [! v1 H
<statement sequence2>;
0 j0 i, s3 t9 }* X$ [6 E/ Z: L ...
5 P6 h2 r* | Q) H% b \6 b else
# X4 S' h m0 @0 O: ` <statement sequence3>;
6 t1 S L$ @% `+ Qend;
% J' ], h. k& n5 d. ]! ^4 q6 U' I' Q5 K
2循环语句* C/ X* K9 }! z& |& \
(1) from <statement sequence1>. v$ g, D6 J7 P' m3 x
until <condition> loop
& y9 ?7 z* j& n <statement sequence2>;
5 ]4 P3 S8 F+ i; W6 X end;
3 v6 Q: N" f$ D; \7 d (2) while <condition> loop4 \5 C5 U, V: p+ J0 p& N$ e
<statement sequence1>;: o( _! c& s" G& o! J/ A& G3 u
end;
+ a; c [% k; |* E' R: K: b (3) repeat # T( N* h% U n" [7 W5 k
<statement sequence1>;" q( C, {# P8 D. d0 d& O" ~
until <condition>;$ G P! \. y! t8 S6 x
(4) for <condition> to <condition> loop
. t) f4 ?2 `6 C( H) m <statement sequence1>;% R7 \5 R! h+ D: o' U
next;
9 K7 C- I3 w3 H4 q5 h F3中断语句
7 N6 D; A6 D: R c# m waituntil <condition> prio <integer expression>;
# |" s" s+ x# T7 B* y: I Q/ w* O
4 ]4 V7 V8 J% I" i8 w) d以上为常用的函数!. ?0 T( b# E% ?* j3 M
还有很多,如有需要我把资料发到你邮箱里
" l8 L8 ]- h1 }0 X7 O0 u; n% a
0 M- |9 N" o8 x
4 S0 v& a5 {. G- O/ O$ [; Q% W, F3 q8 m* s& k0 d e0 Q1 k X+ ]1 V4 d
, x. g& x" D7 U. S. T1 F9 l9 X/ R; X( i2 y
1 d+ `$ a9 B' A5 s
& _ i" l4 f% K P) ]2 }
5 p7 N% O. e( L' j. v7 R
t: J9 V9 L6 \" P" G7 u. j
' y% {$ p7 X' A- |; ` |
|