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发表于 2012-11-13 08:48:12
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1判断语句5 e# e2 k$ v1 X) P. q2 E8 m
if <condition> then' ~& N9 ^1 u, ?% I1 Z
<statement sequence1>;9 G P) x$ D, a( r, o( E
elseif <condition> then
! ?7 w3 k4 d2 t! f <statement sequence2>;
0 W0 {% y- Q% p$ e- K else * I: a$ z) R5 H/ b
<statement sequence3>;3 t8 H# c& ?' f- A4 s
end;
0 t# X- i( j5 }+ p. m) `+ l" Q如果分支比较多，用：
: k# S. ^/ Y' V: i4 T. W inspect <expression>
1 h$ W8 n! H. T# D) o9 s. E when <constant_list> then
5 p. q5 z q) [3 b- B; O2 f <statement sequence1>;
1 Z7 `5 j% }* Z when <constant_list> then! K# P7 f3 p4 z& S+ F
<statement sequence2>;
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else% l2 x& g* [: l/ o) `# s i8 @1 `
<statement sequence3>;: m7 V) `9 A3 v/ z
end;
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7 b# u& X/ Z& a1 j2循环语句" p/ U+ }$ ~% K' ]
(1) from <statement sequence1>
: V* Y! y7 h) H. v until <condition> loop% g6 G% U8 ?/ U- Y" E$ i b6 e* ^+ r
<statement sequence2>;
4 n7 C* K3 i# Y2 G. h$ D+ y end;6 {5 x K6 V( n1 e
(2) while <condition> loop, Y& L5 x* G7 G9 ~& ?3 v
<statement sequence1>;
9 B- [# F: `) f6 ?/ K" F1 W: L end;
! d# K' L+ \* x* C (3) repeat 7 t9 R* a i# K& a3 S9 g* P
<statement sequence1>;
7 `5 o! g( @9 G0 [) M until <condition>;* g* ~4 [6 G; Z/ _1 W5 l& o
(4) for <condition> to <condition> loop b) n3 ?8 h7 @9 A9 Q- Z
<statement sequence1>;. l, m! W5 w5 [% g
next;, P) [* M6 C B2 M; P9 U7 ]
3中断语句
7 B3 e( d% w$ Q: y! @: O0 D waituntil <condition> prio <integer expression>;1 N* g& z+ m2 X; o2 h
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以上为常用的函数！
( D1 u. g- ~6 Q4 E# g5 K' {0 Z! G还有很多，如有需要我把资料发到你邮箱里 - |) j y$ M) a; Z; w
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