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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
- L9 y- \9 w$ C if <condition> then
# m4 u$ s. p+ O7 s <statement sequence1>;8 |/ N0 i# _3 ~+ W4 r7 c& ^
elseif <condition> then* p7 Y# m( W r( G' Z x% F5 v! Z$ ]
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
) R$ R4 _& i- c2 {" ? inspect <expression>
1 a8 m; s5 k4 ] when <constant_list> then# _* }. q5 R0 d6 E/ d/ y! D8 T
<statement sequence1>;& ^1 _1 E2 Z+ N: \' k' F
when <constant_list> then2 ^% n% s; [! Z# q0 L9 k% s
<statement sequence2>;
( I% [( k0 }, @) _8 s& e/ l1 i& q ...
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<statement sequence3>;2 x$ C" H! n" Z% Y
end;" H) H9 m$ x# }3 u
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2循环语句
9 h9 }9 `# m ~3 ~ (1) from <statement sequence1>4 B( Y. I0 l# ~4 W* g. S3 T4 b
until <condition> loop
- ~: x- K, C6 l1 G <statement sequence2>;
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(2) while <condition> loop" {, a/ u' k: V* M
<statement sequence1>;, V% Z* I( b/ _: q* k
end;
7 i: b0 C' i0 V/ @& M8 B% C1 a (3) repeat 8 f9 u7 i8 w7 r* B$ }
<statement sequence1>;
- V. }$ ~% l) z3 u. c% ~/ } until <condition>;
1 T( M, C1 n- F, i( e2 C3 V (4) for <condition> to <condition> loop
' Y: d) g$ ?) d: B, ~! i* _ <statement sequence1>;
2 l$ z/ L1 V. A; a next;
# |* l/ P% d2 M# g8 k) y3中断语句4 V; U) K4 w4 i. Z2 W0 g! ^
waituntil <condition> prio <integer expression>;6 |; f* g7 R( t! r' ?& r- u
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6 y; F0 L: W; f0 {. F! f以上为常用的函数！
) r: ]6 l' b2 f: e: x# [还有很多，如有需要我把资料发到你邮箱里 6 J& i8 |& ~5 P4 F3 j2 H
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