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发表于 2012-11-13 08:48:12
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1判断语句3 ^/ q9 B8 P; L9 _ ~" s5 o
if <condition> then
" v! g) h/ }1 Q/ `1 l9 u# N <statement sequence1>;5 U9 O# G2 J r! u+ O
elseif <condition> then
+ H T' _( A+ I7 [9 ]4 E+ Z <statement sequence2>;
' l$ o9 }# Z5 x else
6 J- t6 U) n3 Y <statement sequence3>;. S L; ?3 n9 @# f) z
end;, e l7 O0 `$ [' _; ^7 S
如果分支比较多，用：
$ g5 s; `, C. U( M: R4 E inspect <expression>1 j$ w2 R. \6 B6 h. D9 }0 o7 u% ~
when <constant_list> then: W, R9 X8 U/ F% ~
<statement sequence1>;
. r, X9 N# Q: q) L% e, S, @ when <constant_list> then# z {( f' } \& M; d
<statement sequence2>;
0 X5 R5 { T: h- e# q) z' P ...
- ?( O% f2 C0 O0 f% z0 j else
. t, f$ P7 T6 h5 |; V <statement sequence3>;
% U. b4 {0 o; l3 Q2 I. `+ x/ Nend;
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/ T3 g7 P' P+ N, [1 V. f, i4 j2循环语句& D; H9 U& N: b' F; l# y: B
(1) from <statement sequence1># D# A2 N \, z2 C3 o
until <condition> loop1 A- A: ]" K' V8 m3 O
<statement sequence2>;" g3 n6 r9 G3 \. L) l
end;$ T6 p& n h) R" ^3 m( b
(2) while <condition> loop
. Z8 n; b2 \9 [; Z <statement sequence1>;1 w3 o. N6 r2 t6 w
end;) h7 j3 |6 t; j# Q! _ b+ y
(3) repeat
2 \, { k0 P- ]" D: b1 [ <statement sequence1>;% h$ C3 I' b- U+ T: b+ C7 l; j+ v4 e
until <condition>;! y, o% \ [" X# A
(4) for <condition> to <condition> loop7 j- m5 b: ~& H: W
<statement sequence1>;* D6 Z6 x# ~4 O3 | A5 {# O* v
next;
% R5 ^3 |4 }/ e6 O! e3中断语句
. X# o3 E7 r$ t I0 p. S* k waituntil <condition> prio <integer expression>;! v, v& L, l" w! l7 h# } S
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6 Y; W1 y) H& w, l+ W. N' ^以上为常用的函数！
/ C8 U; j7 v# e: R# r1 I+ D) _还有很多，如有需要我把资料发到你邮箱里
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