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发表于 2012-11-13 08:48:12
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1判断语句1 B& b* A3 Y+ Y- X. _2 q& j
if <condition> then* Q0 y: h2 V- q, Q2 K
<statement sequence1>;4 v) |9 k; v. S
elseif <condition> then
/ v- I) ~9 T" w3 c <statement sequence2>;
2 L2 r, ], i, z# M( i. D% z) {5 d else
* ?7 c! l& U8 Z. q# D <statement sequence3>;
/ c: M! S' M" s2 a end;6 `7 p% `7 ~% s% M9 G
如果分支比较多，用：
/ B- K: U9 h! E1 n& \ W( a, o inspect <expression># D7 t+ c, k/ _8 k
when <constant_list> then) [$ Y, ~" V& W. U" u* z0 G2 c* [
<statement sequence1>;3 z. [/ k, B& I3 U
when <constant_list> then
0 C1 a7 G N( W3 j* N <statement sequence2>;# D+ _+ I3 M9 z$ Q9 t. w( g
...3 A+ x* F% I: w0 z% O
else
" d1 s' S' r6 Y0 I1 R3 N: ] <statement sequence3>;" @6 }9 V t: j
end;
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0 h0 [$ A2 V( u3 t5 I0 P, Q2循环语句
$ u Q7 |6 a$ X' R$ F (1) from <statement sequence1>0 \& @2 ~. B: c z& q s9 x( b
until <condition> loop, {2 _0 q( |0 k+ W
<statement sequence2>;
) Z7 b9 {% t* r/ ?1 z end;; n2 \: v+ Q e6 S* q
(2) while <condition> loop
1 e s/ U) Q4 X# ~# c8 A <statement sequence1>;
( Q3 v1 P; s" G' K/ W end;
* H) n" n; x" g" v( H. l (3) repeat / }6 Q c; U) @% [. s. D
<statement sequence1>;
. p% V6 P" p) Y; ]$ X until <condition>;
0 O2 x+ R) M7 O3 Z5 E9 D (4) for <condition> to <condition> loop+ k) e$ P: q' o3 P4 c
<statement sequence1>;
N: P2 d8 w* [3 ]$ U$ e: ~ next;
7 m9 ]$ B0 `$ |$ d4 w) g$ R; Q3中断语句
# C5 M) N, r" G# J( h waituntil <condition> prio <integer expression>;
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4 r* a, T$ m/ k" Y& q; _以上为常用的函数！3 A7 y+ S7 o8 R* p# M6 Q! v
还有很多，如有需要我把资料发到你邮箱里 $ t& }( }0 E K& P9 b
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