|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句( m! A$ k# g" l" u# \1 |1 D. a
if <condition> then* j' O0 c1 U4 C# n& G
<statement sequence1>;
% \" `8 D- v6 b( ?8 t; _" E& T elseif <condition> then
1 [8 ~( F7 E* ?. f, U <statement sequence2>;
: \- {! d; Q, V, S1 C# u+ t3 H else
! `. f' v( s% H, O& |% r5 A <statement sequence3>;
L+ s: H- O, o end;$ s! b# F5 q7 P+ A* y: D7 i
如果分支比较多,用:7 M/ u! B; @. s
inspect <expression>) J% N: V8 \) _# j8 D b
when <constant_list> then
: m$ t# e3 p* Q# k <statement sequence1>;1 y3 d0 x3 U$ ^" h! X3 o8 P
when <constant_list> then
& K# b4 b M& I& f <statement sequence2>;
+ n, J3 b/ C% Z0 M, q( \: g& Z. W" ? ...
, Q0 @! ?" K- i( `# o else5 k$ i/ v6 k; E! S y. m% U
<statement sequence3>;
2 Y) m8 i6 d t8 j1 `7 zend;$ `' m1 d, M2 [0 y! i. C" C
! e+ U' U, v" \1 n( O4 u* @. J2 c
2循环语句& Y: C0 S0 u4 H, W' v) ?0 h4 X
(1) from <statement sequence1>( f* ~: r6 g! u6 q5 G
until <condition> loop
& l/ y* D, x/ V <statement sequence2>;0 b& U# x0 Y2 D, q
end;2 c7 V# |( t9 R- s
(2) while <condition> loop( L5 O" M1 j4 n2 V% H
<statement sequence1>;
+ Q- I1 B9 ?. ]1 i4 m" o7 @ end;/ W3 I* T; h9 {/ l5 G* `
(3) repeat
4 ]3 s, t8 w" r <statement sequence1>;
, N5 q) V1 L/ F4 J9 v' ` until <condition>;% f1 b7 \0 B) |2 f7 l! a) [
(4) for <condition> to <condition> loop
8 A/ D$ g" R# C <statement sequence1>;
% x! C3 g% }; R: U! n/ R- F: O next;4 j+ d. U( ~$ t
3中断语句6 `0 w2 A+ A1 D
waituntil <condition> prio <integer expression>;
/ v) M/ R6 e5 f: ?( U" j6 A- J# u% Z- i% D9 ~% I( F$ d$ D
?9 d' F- g: ` R
以上为常用的函数!
' `6 X! _/ ~) r# ~- S) g$ R还有很多,如有需要我把资料发到你邮箱里
- C) g( ?2 i. ~$ f
6 A) U o& j6 H+ o [7 B# \7 w3 I& j5 A, F
W8 ]4 E( @# t9 }$ s5 T' y0 e
( T5 q+ N1 `1 w
2 O) q' }6 `. W7 A; n3 T( q% l" C0 K! q' j0 C; m
' D- W1 Y0 {; ?; |$ {3 _
0 U7 X0 O/ k7 s: u, ]) I9 _- S) O/ S
' }. C) s/ i) t8 o' I! N7 W
|
|