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发表于 2012-11-13 08:48:12
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1判断语句. `# b5 C" O! O' V: {% g" |
if <condition> then
/ ], x$ n1 k# e4 E: D; g <statement sequence1>;
! w* B# Z3 [7 u+ }% \: z: u elseif <condition> then2 ]( u0 W2 b5 C& }, _$ L! }
<statement sequence2>;+ T# n0 X5 O* A% u( g' U# F
else
5 D+ S9 s: I# ?! u+ P <statement sequence3>;
4 ^, v& \2 o: D# i* X7 s! _ end;
2 @. o" q5 a$ u: e% v如果分支比较多，用：/ d* z* B/ {1 j- f
inspect <expression>/ G7 ~2 U& E8 `% G
when <constant_list> then
1 x1 S7 [- h; c+ H- C" ? <statement sequence1>;
/ k& h* `+ w! C% o, t/ L; P when <constant_list> then
: D, S: ^' r K- d( a8 ^ <statement sequence2>;
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else
' W) |" T2 N: g9 d( C/ d <statement sequence3>;
0 E3 ~ W" l: A* P' K/ R2 E; ~end;6 ]8 j; f( u; Y6 ~/ i6 X- E
5 H6 }$ @6 C) b# H2循环语句
4 H9 r# T# _$ r/ {5 | (1) from <statement sequence1>
( K. N e$ n2 \0 _ until <condition> loop
6 U7 I/ y) m9 I. ]8 D8 m- X) j m <statement sequence2>;
6 a- Q4 K6 e; d end;
4 K* Q: v: x: f' L* c7 M (2) while <condition> loop0 [; ~% I" g- G F9 D
<statement sequence1>;
6 Q+ s T4 d a1 f8 E- M end;% d& T9 I9 Q+ p k$ Y% y- M- X
(3) repeat 0 g' ]# }* h% n9 ?" a& \
<statement sequence1>;' D6 Z. ^! g9 I% Y# s6 n
until <condition>;
0 P$ r5 H+ N: | f3 E% Y# t7 _ (4) for <condition> to <condition> loop
: E* ]! t. I' d" {) y <statement sequence1>;( f+ O6 W: v! r) \% @3 O
next;
% a+ z7 r8 N4 b, f' ^% x# D# d. k3中断语句
# A7 N' Q7 R& p7 C: k3 H" g7 ^ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
. R, b# p$ }4 r a, ?+ p还有很多，如有需要我把资料发到你邮箱里 4 P2 g p! L: d+ j
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