|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句: v4 W' h4 N) u$ V9 N
if <condition> then- @2 M9 m+ L" J( W+ q8 T
<statement sequence1>;' J" \( ^0 v: F. I6 D: _4 |
elseif <condition> then
6 {% Y' _. h0 P3 `- ~6 y ` <statement sequence2>;
( T0 n9 U+ ~' W4 O7 Z5 ` else
# D0 x+ K1 U/ k% Z5 H' [6 j0 P <statement sequence3>;
$ z. b. k9 q) M9 m1 x/ w; E end;
1 |$ H7 ]' ^. Y' ^; H3 z如果分支比较多，用：
7 k# c, i$ t* n% G( T1 d* } inspect <expression>
3 T* w F3 h& G I( b1 X when <constant_list> then
& L& b. c4 H% e1 L! b% w* n <statement sequence1>;
! J( f' I5 i" s) q2 S3 ~: r+ `3 v: g3 { when <constant_list> then" C( B. s& n. i0 R
<statement sequence2>;; `( e- o: p$ |9 x* p
...3 f; C) j( p H/ o1 c. G- g
else' r" X1 c$ n% L( ?! d
<statement sequence3>;
) \. E, R+ _3 }; e; ?8 hend;2 s R) [8 e9 f/ G3 d
+ ]7 e' z0 Q, Z2 o2循环语句! c; c) b6 |6 q+ M6 S' n h
(1) from <statement sequence1>7 E: _% b! K7 A
until <condition> loop
$ h: {4 ~8 {: a" k% b, W <statement sequence2>;8 O( [7 Y b9 [, g0 @
end;
6 M9 j9 a6 k( C# ~. ~ (2) while <condition> loop
8 i* h7 N# o' Y* k& @ <statement sequence1>;/ B0 q7 U8 m( e: c8 k3 |8 o
end;
$ O! ^1 E0 h+ ~ ~7 V$ t; Z7 @ (3) repeat - d6 f3 n9 C3 K- x$ k' Z* {
<statement sequence1>;) D6 G( J' g0 F- G6 v* b
until <condition>;
8 J9 C5 o; Y8 l k (4) for <condition> to <condition> loop
# _6 z/ K W" o9 ^0 t6 { <statement sequence1>;- @6 W" d9 R D9 d
next;
9 J* Q7 [ O, I5 _1 A3中断语句 @+ ?& w* d6 F$ _9 T' P! Y9 ?
waituntil <condition> prio <integer expression>;
' J2 {3 L$ O: t; f) |& U5 }2 n* y# v' u. `+ b4 ^2 w }4 E
, E; T, b7 y# @4 G: W以上为常用的函数！
+ A8 x4 f; _# Z. _/ s a( t: D6 ~还有很多，如有需要我把资料发到你邮箱里
# G5 v3 X% Q, J3 V! j
8 }$ y6 u) @. W* R' U; { l @! \+ [7 y$ t2 D, Z# F! n
5 B# B3 T+ _4 f! n
; n9 ^6 I% ^1 j, ^
' q: w I% }! w6 j+ c1 A1 g1 M& p6 d! w1 M4 X
7 E1 r/ I- \# w. v
0 B' G: b$ n E T1 W6 u! b+ r' X: p1 P$ h( r& B' Z& H
3 T1 c, O H3 t7 t |
|
[复制链接]
