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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
1 K) |, N8 y1 x$ a& w! J. C1 F5 c if <condition> then
7 D7 j* U6 A" {6 W M <statement sequence1>;
" |, v4 i- g- W9 l' e s$ Z elseif <condition> then; U! r6 x. l9 \4 S: Z& x8 n. F
<statement sequence2>;
% e3 x- }" O/ w8 u/ @, l" y% P else
! }8 H; N. j4 X- Y' J' s9 o# W <statement sequence3>;: A T. M* `8 d& }# r
end;) f1 H5 n& [% A
如果分支比较多，用：3 E" u% i# t& V( A! Q7 ]* |- d$ p
inspect <expression>
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<statement sequence1>;
7 W4 f S# n# E' L: G5 X& o: m6 ` when <constant_list> then
, C" w7 ~" e V4 V <statement sequence2>;
4 h7 c3 x$ e. T5 U- \ ...
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<statement sequence3>;; V& Z. m0 x1 o6 D6 N2 B
end;
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2循环语句
1 J' i8 ?/ x# N5 m (1) from <statement sequence1>4 a+ s" ^0 [* `
until <condition> loop
8 b' c9 y6 R3 t4 D" ?/ L$ ~# i& K <statement sequence2>;
0 m( Z/ q q" b- D8 U end;. H9 @+ w k3 D w+ _
(2) while <condition> loop# r7 h* R* U) w/ Y" g
<statement sequence1>;- ?9 J5 A, p3 W' O
end;
. O+ k6 G5 ?: y (3) repeat 7 n4 }7 o: X; l a2 K! P
<statement sequence1>;
- A$ p# E, ? k9 F+ x E until <condition>;( N& q6 N4 v( N* s+ B9 o* k0 h
(4) for <condition> to <condition> loop
$ A2 [) j2 t: V& ^9 M! z5 p+ V# _ <statement sequence1>;
6 a6 p' M- Y! @3 k+ O7 _ next;: J' S. B& b2 c# d5 ?4 R
3中断语句( T- n' Y1 M7 Q( c
waituntil <condition> prio <integer expression>;; y+ W& w! s3 Z% `
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以上为常用的函数！
; r; J& P5 p. W# f还有很多，如有需要我把资料发到你邮箱里 " H3 o `4 P# }# k, H. A
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