|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句9 L6 p8 p1 \6 b% c5 j; w
if <condition> then5 ^3 U# k$ a: T5 v
<statement sequence1>;" K, ]& u- y. X& Q
elseif <condition> then
( z+ \8 m6 t4 L$ u, r <statement sequence2>;
1 X+ J; i3 A4 A1 }& \7 C: S else
" g1 N, ]3 ~# |/ f7 v <statement sequence3>;
# s" _- j$ S7 l end;
9 A t; u& f8 E, i \( \/ h如果分支比较多,用:
, j. d/ x4 R( b) v k inspect <expression>
# _5 ~* Q; p0 G: h) k when <constant_list> then. U! r' t" {( E* g6 w a1 a% b. l
<statement sequence1>;
3 K& `0 |' }/ y6 ?2 ^ when <constant_list> then$ o* ]+ X4 O2 W6 W% |* \7 z
<statement sequence2>;
: T. E" w: i3 K, f ..., m5 D# | g$ H! z7 b
else
8 W) B( s; O! p5 e2 _, m6 z" Z <statement sequence3>;
# ~8 X, b$ z$ X) s$ j8 rend;8 C6 ]5 l! [8 F' A" P
6 t, a- L6 _0 j ~& |0 S2循环语句* H8 H- f& W. ?
(1) from <statement sequence1>, j* X/ X5 z) b
until <condition> loop$ g4 `) h+ ~3 Z- D
<statement sequence2>;
+ y4 }& q6 p( ^$ L% o end;5 n/ c6 N5 R7 S0 B. a
(2) while <condition> loop
4 p. g3 L- d0 x! U <statement sequence1>;
Q0 M( a' z6 U5 r; y end;) N! i$ U4 t1 e* w
(3) repeat
0 u9 o, R$ M/ P+ A% Q9 b2 }, L, f <statement sequence1>;
- r L( `3 {' j0 ^. F' \" S! y until <condition>;0 K% d/ y% I2 A: A0 P% i! }
(4) for <condition> to <condition> loop1 i; v% R/ N5 S# T+ Q4 t" D. K
<statement sequence1>;
6 b: V7 H1 y; D' }, q next;6 h* z- H3 i8 w+ S* \
3中断语句
, s4 f. z! ~ ` waituntil <condition> prio <integer expression>;+ z/ H5 o1 S& y
Q* B9 j' e; _: e/ s
' B8 }0 ^ }9 T# f e! u
以上为常用的函数!: |: o9 J0 L6 Z- S! [3 ?/ J" Q
还有很多,如有需要我把资料发到你邮箱里
( f$ L3 h& p" u- W: |( e
4 ]3 q, Z5 S' ]4 ^2 L3 E- X% A! [% E& m U9 @3 G/ o1 P/ R$ i
: [: \3 @4 q J- \4 l( K' q j ( X, e- O% g& P/ k3 h% l
h# u% G! J0 q
0 s8 y6 |0 g2 u+ g" u5 d( E
( E5 A* z6 X7 W/ L, B2 g
+ ]3 T6 B: @5 m( x! F( _9 t3 Q0 g, P
" { o" f: c) C |
|