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发表于 2012-11-13 08:48:12
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1判断语句, O) n% o, L2 f+ y) W; D
if <condition> then+ H9 K: r/ O' Q: |
<statement sequence1>;0 A5 V3 N, k H0 T
elseif <condition> then! d# p( A, |! O" P6 g1 A& T9 R
<statement sequence2>;
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<statement sequence3>;+ v! ?1 X' i9 C2 c# }6 ~8 p0 q7 b
end;+ f2 U, i/ m; [- |4 f
如果分支比较多，用：
* C7 _9 H% u$ I% Q inspect <expression>
4 z* J3 J7 t' [" ?6 j when <constant_list> then
/ O# b% K! C2 @ <statement sequence1>;
* ]0 x2 v/ S* d$ J# U) [4 j when <constant_list> then5 o; s0 {0 O+ I7 ]
<statement sequence2>;
# B: ~7 q2 s* J/ m# B+ k! G* I ...
3 d. J% P6 V5 G5 y. N else
2 F0 }( P) a% s, u) x <statement sequence3>;. v9 b" J0 y9 l; H0 q
end;
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( {+ C2 y9 B" g/ G& [+ m2循环语句3 x; p8 P @9 p3 w
(1) from <statement sequence1>
2 c3 c7 n! C9 L9 S% C# @ until <condition> loop
\. _! y% ^) U p) H" p- t <statement sequence2>;
* ~# L" V: I$ g0 z end;
4 Z+ x6 [" H: l/ Z/ f+ [- t, X8 c (2) while <condition> loop n2 j* T* S: \5 U( p* l( @
<statement sequence1>;
D! I. ^" w* o' I/ M1 F end;& z4 S% R; ]% i5 I) `, U
(3) repeat
8 G# B4 p* ?' t g+ U& [& p( { <statement sequence1>;
4 X: ^! \: |& F! @1 A `& Z until <condition>;
9 `. K/ V- @1 I3 _7 J, v) s2 E P7 W (4) for <condition> to <condition> loop
: a6 d% n: t# y3 V3 ] <statement sequence1>;- [& W- T; A6 |/ b0 D9 h
next;
, T1 n8 X0 u. O* c) k( k$ U3中断语句2 |: ?* J4 l4 H6 [/ w4 H
waituntil <condition> prio <integer expression>;4 b I L* X6 n% K& d
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以上为常用的函数！
% q& k( ?- d; L9 b0 I还有很多，如有需要我把资料发到你邮箱里
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