|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
, _6 \% o9 D7 F2 k$ j if <condition> then
6 W" n0 L6 q) m" ^. N3 V <statement sequence1>;
8 p) h$ G/ G! F elseif <condition> then
W8 e w, x/ l9 X <statement sequence2>; P6 K n; P$ u+ }9 r' L
else
- V4 p% J0 ^& z& r& L6 [0 B% t <statement sequence3>;& [& }$ s3 H! n
end;
, W- d0 E8 t5 k0 K$ l! z如果分支比较多,用:
' Q% f6 N# \5 s4 \4 _/ W' C d inspect <expression>
/ i1 V0 E/ q' O, W when <constant_list> then
9 H$ j# A. {+ B* X$ H( @ <statement sequence1>;9 ?& v9 R; E0 L# X, U
when <constant_list> then
' f9 _" y6 \. }" s <statement sequence2>;
& V8 S6 V5 e# x/ N, z# `& e ...7 L: K3 R3 r. Y
else
8 ~+ j% ^- c& G: o <statement sequence3>;
9 P1 c- a; c8 M6 r8 D- ?end;) i9 o7 W- _/ W9 z7 j! h9 b* O! T
5 t3 b% o" f! F: E. F k1 y2循环语句$ k! e( m# o/ r4 _
(1) from <statement sequence1>/ \8 }" U1 t+ V# w8 @ h
until <condition> loop0 k2 Z( E3 O. E$ O4 ? a
<statement sequence2>;
1 F* M! U$ q6 o0 v( E2 z+ w7 h end;! k" r8 f( g6 X! o5 \: n
(2) while <condition> loop% T3 O$ E+ S+ t4 q0 Y2 }, B/ q
<statement sequence1>;( Z9 s p- x. ^; [( I* \3 V) z
end;3 p, K. L' X3 }. f2 u( v r
(3) repeat
6 J5 E7 P7 J. h0 M7 _+ o <statement sequence1>;0 R; i2 k" H6 m0 g1 [6 ]) s
until <condition>;3 b0 ` d9 p( F) @3 F8 W, ?
(4) for <condition> to <condition> loop4 M( L9 I, s/ k9 h1 [0 b5 a$ a7 M+ s
<statement sequence1>;
& k% a- u5 Q; A q next;
/ N# H" Q. I0 k+ X( d0 b3中断语句6 a$ p) C5 L0 z( n/ c$ u
waituntil <condition> prio <integer expression>;
( q! i& x m% H% t9 Z7 i: s1 ^5 }& l+ v0 h6 x- ~5 T% I
" p+ g, l% I( w* z以上为常用的函数!
. o; S b' D" M) v还有很多,如有需要我把资料发到你邮箱里 / u- F5 L9 u& [3 N$ h
6 \2 r' ]! J3 z
, T1 J/ r. y6 n5 ~: c2 t
1 x( r- \, E( l; d( D% a4 @: }7 n
m8 y8 F. Q2 b
2 G' s7 k& e, W6 O+ c+ \8 @5 I% ]( k$ ?( Q" ^
0 |8 h5 r& J) x: R: B% {; t
& k4 N1 l1 ?9 H0 M; [* S8 h3 C
- f c- C/ }% t 4 P: h. s( a/ h2 t* r Y7 z- c/ a
|
|