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发表于 2012-11-13 08:48:12
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1判断语句
, M4 G: O! U9 |% T, V if <condition> then
5 @. c: P# f! T0 v" g5 R <statement sequence1>;
* p' O9 W, ]' B' _) p elseif <condition> then
. O! Y$ Z4 Y. e& N3 y# u7 U/ c. H6 F <statement sequence2>;
& s1 t$ U! `! D: X else
9 S& N% l v- f) U; v0 F <statement sequence3>;! Q9 ^, z& g6 h9 H# G; g0 N
end;' U2 s) f# j+ n6 B/ W2 [4 \# t7 F
如果分支比较多，用：
5 ~$ _ u' }$ @ t$ s. Y inspect <expression>
. p! X5 x# s e2 o- V7 { when <constant_list> then
6 v( ^6 C1 i4 d5 b' d2 R8 L! e <statement sequence1>;
4 y/ v/ t$ r- o! i when <constant_list> then7 j; ~9 g1 T3 c5 F5 v
<statement sequence2>;
) n) G' g- ~: R" }% Y" }8 a ...
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<statement sequence3>;6 J F7 J7 z, Q9 @+ P( \9 s! p
end;% Y V# W0 h* t
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2循环语句; R" g7 s: E" ]
(1) from <statement sequence1>) ?5 b- F$ a4 v5 w' q7 n
until <condition> loop
# C/ f5 s* q* a9 M <statement sequence2>;# }9 a6 J/ Q9 s2 D0 P. }' S- }' _9 d
end;% f S1 t& D/ G9 e9 w
(2) while <condition> loop% @2 j. q2 _! B9 L/ E: {5 v
<statement sequence1>;
4 n# t5 B! G2 D% A: j6 Q, o end;
5 y! }* G1 c( N5 u (3) repeat ' ~7 d7 r4 V4 n
<statement sequence1>;
X! N0 x" i, J' j; Q until <condition>;( B/ a5 |' }* ?; x. ?
(4) for <condition> to <condition> loop
1 }/ p; {- p( n! A+ S: }8 m" T <statement sequence1>;
* }$ X) @) o" V; O! E next;
7 @! Q( V9 m5 d! Q" P3中断语句
- x. C% a; Z0 @: p. r" {& n waituntil <condition> prio <integer expression>;
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, K) D. D P/ \+ j以上为常用的函数！8 @+ z* e9 @3 u. y
还有很多，如有需要我把资料发到你邮箱里 7 I0 N# G5 C# }( j- p# r; _9 X$ v
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