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发表于 2012-11-13 08:48:12
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1判断语句& l1 `7 w) ^9 y2 D1 I; d: a" e7 J- b
if <condition> then
* m8 q8 ~0 `0 y1 H% H <statement sequence1>;# s6 _& s0 v& ]
elseif <condition> then
$ T% v+ R3 K9 l' ]9 }0 ^: V <statement sequence2>;
& U6 J, X5 ~) K, Z: J else
9 I3 Z# p9 o& S <statement sequence3>;
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如果分支比较多,用:
1 b# P( b/ F7 E! l inspect <expression>
2 _# u6 t4 H) M+ ?2 D, b- q6 V when <constant_list> then
: W0 j- I' O9 C G <statement sequence1>;
/ R" m6 g& R* C! M: P when <constant_list> then" x8 D4 r: Z& q1 Z8 f( ~* z* }8 s" _
<statement sequence2>;% \' s z& L: U; e
...
6 \8 \& k$ n B. r' \& n else
$ D# f' L& Y! I: L, u( x <statement sequence3>;
' \* x3 s) X9 U) [end;
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2循环语句
( v M$ Y, c! V1 S (1) from <statement sequence1> h, S: y3 P6 F* z
until <condition> loop' @2 _% f3 J2 \9 j( Y
<statement sequence2>;- Z7 K: @1 c. f, Z% d! ~
end;
6 t+ d0 {% h& r' v3 I) x. D* R: A (2) while <condition> loop
. ^' ?7 x2 z+ s- |! y o/ E <statement sequence1>;( X9 x1 D3 ]7 _0 g
end;+ P; \; b1 l6 y2 R. i* O
(3) repeat
. a9 l9 h5 R. `0 @; o# T <statement sequence1>;1 L, K2 J& O9 _
until <condition>;
8 u! A! i% H! @, l2 U/ a+ z (4) for <condition> to <condition> loop( i7 o/ e3 j! _
<statement sequence1>;
& U) k' u: }, J/ @( t% x next;
5 \, S9 ^4 G+ N+ Q# S3中断语句9 e, N; u5 I& j1 i2 x$ |. f) T
waituntil <condition> prio <integer expression>;4 L! z# @# r" \) l
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以上为常用的函数!
7 p5 B U4 O, i- h4 k: a' a还有很多,如有需要我把资料发到你邮箱里
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