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发表于 2012-11-13 08:48:12
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1判断语句. D6 v" Y! c8 Y% o: `' @% t
if <condition> then
0 @, u9 S: w6 x* d5 i3 T# r' V <statement sequence1>;# V3 |+ Y6 K5 u% ^ G0 O
elseif <condition> then, l7 f8 _+ G3 Z
<statement sequence2>;
3 h* @. \' E. u4 E0 n! ]9 V else
1 S( _1 R! A/ @. M <statement sequence3>;
) N3 k# j. G& I. x+ a$ v" E end;% n: A9 |" D/ L; @ V
如果分支比较多，用： @+ [. {) s7 ~4 ` N
inspect <expression>2 }7 h5 r1 x- v* P
when <constant_list> then4 u2 F! c: |; J$ ?2 y: I! O0 y
<statement sequence1>;
2 S# J6 z7 g* j when <constant_list> then s3 W6 M) _! j& n* H& I& e
<statement sequence2>;
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else
' Y. d: B' X( B X% z2 m7 R% f3 I <statement sequence3>;! q1 ]" P8 ~9 ?/ t% o7 L7 ?/ J
end;
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2循环语句, [: E2 a1 u4 |! N" \9 p
(1) from <statement sequence1>
) o8 k: S7 G6 ^2 t' @ until <condition> loop8 y X" b( h% r, I7 @. V
<statement sequence2>;
' W% w. K- R9 x0 V: ?2 h: O end;$ ]9 s( v; T5 P [8 C
(2) while <condition> loop, \; l: m. j0 G4 z5 `% t' F
<statement sequence1>;
) i, b5 i. o. Z2 y' k" O end;
# T) q4 \1 R5 B& Z* R ?. |3 F (3) repeat
! g! ?4 t/ D; m <statement sequence1>;+ M! F7 R9 k* D
until <condition>;9 p% A0 w) g& P
(4) for <condition> to <condition> loop' u, C+ `& ~8 Q8 G; E3 K9 Z
<statement sequence1>;: P2 M7 L1 J& S; p) G
next;/ \1 n K' D2 t; D
3中断语句
5 o- n& J; D0 I. o9 R/ e B' n waituntil <condition> prio <integer expression>;
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以上为常用的函数！, _2 \# j+ b% }- a# X4 {. z6 j1 y
还有很多，如有需要我把资料发到你邮箱里 5 b7 R# J8 V' \' {" p
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