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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
8 X" ]; A: b# N& d if <condition> then
: R* z7 U2 p. z9 c' r# H <statement sequence1>;/ n, C* p2 {% V U7 \0 A) U9 _2 M. _
elseif <condition> then
( T M: b! B% B3 d <statement sequence2>;7 d: S |. N3 n
else , W- Z) o8 S5 p5 U9 I" j- v2 b
<statement sequence3>;1 p: N _% ~* v1 t& w! ~
end;6 F' |; u" f' J9 P) L7 B
如果分支比较多，用：
a# ]" h# Z& |" w inspect <expression>) E$ F: u& z- P
when <constant_list> then# r2 {" J1 N+ K
<statement sequence1>;
! o' C, `4 m# s when <constant_list> then- B; X/ Z! u! {8 }
<statement sequence2>;) M$ l# }8 r: |/ T& u- h
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else2 m7 e( v* C1 r
<statement sequence3>;! |$ Z* E6 P4 D' j9 x1 A# C
end;( J2 T# @9 Z' |
! B& c9 n$ _" C# }3 t2循环语句4 }' g8 ~/ O5 T- ]
(1) from <statement sequence1>
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<statement sequence2>;
: T8 D. J0 p H3 Z% f& l6 k- L end;
3 D# L( p5 U- @. I" q t (2) while <condition> loop
7 V% }$ m. D; h% d <statement sequence1>;% T& { \& n M! J0 ~7 m$ w
end;
+ k/ b7 F' p1 S1 i& ?" e (3) repeat
4 C! G; ]" x# [2 M2 W <statement sequence1>;. O$ I1 U) e: B4 |. Y3 J3 P
until <condition>;
) f; L' E% ?! l/ [( O$ i (4) for <condition> to <condition> loop
G( I4 g+ J c6 u <statement sequence1>;
1 M6 T$ K% l- W. m2 _6 B next;8 n. z& g a% K6 S" j& {
3中断语句
# w9 _* M! y) P& G$ n waituntil <condition> prio <integer expression>;
Z1 S2 j4 m" b# Y" U. y& j j; h8 w/ j
, f. s: _, e4 w0 u3 I8 F: q以上为常用的函数！+ k+ `3 c9 T! L) \! R2 D2 f0 C
还有很多，如有需要我把资料发到你邮箱里 $ q8 z9 K- A' y$ J* Y4 x7 }
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