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发表于 2012-11-13 08:48:12
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1判断语句
$ o( k3 ?0 s4 P7 G3 R+ ?2 h if <condition> then
5 ^" G6 Q4 |0 O7 U! @# U <statement sequence1>;6 A. m, S4 z+ o$ i
elseif <condition> then- s0 i0 c( N2 J- Y8 G
<statement sequence2>;
. ?8 q" H$ O2 V% b else
0 x3 h' P, S* d9 V Y: J B4 J, C <statement sequence3>;" X3 R) [. c8 U( z( @, v
end;
& W# ^( Y8 d4 m' t6 \+ t如果分支比较多，用：
/ Q" z! P3 ~, h5 }5 d6 L$ n+ c" _0 ? inspect <expression>3 q- E( t* [& N4 R
when <constant_list> then0 w( P- a& ?9 f9 ]2 ?
<statement sequence1>;
1 g/ k5 \" a, \# }* C4 \* | when <constant_list> then
. h) s/ v( g! C; R' q <statement sequence2>;" B5 T6 \! R" u: [
...
2 O1 |5 u5 l. M, u else
# E9 S% B* N8 C/ O <statement sequence3>;% e& x* Q) q9 U
end;
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; }) G$ |) [, e5 _9 O3 \2循环语句
# l! j; Q; B9 U" Z1 ] s- i (1) from <statement sequence1>
5 L8 ?$ k) @9 Y7 q r until <condition> loop
+ A0 q7 N+ G9 ~) g# r <statement sequence2>;
8 f6 q% I1 M- |6 Q# g, d end;3 h# F: `( D! O
(2) while <condition> loop
' O- u+ }/ U) Y- i( d' g7 z+ ` <statement sequence1>;
7 r' c y" ~, J7 ?/ j end;9 \2 P" `$ g# A- O& E
(3) repeat 0 s* i2 i" t& c* k: Q, N
<statement sequence1>;$ m7 C7 ~; x% ~
until <condition>;- d- Q9 J0 _9 I; _* F1 |
(4) for <condition> to <condition> loop% g4 ~) q' A4 f' ~
<statement sequence1>;4 k4 R$ @+ ^) m' i
next;4 ^8 V0 {5 j+ ?" ^! C8 H* r# |1 ]
3中断语句% a" g$ o# u) d: y Y
waituntil <condition> prio <integer expression>;
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" i2 P7 |* A6 s, K! i4 B! g. R以上为常用的函数！
3 ]4 _0 S$ k6 e8 W& p ~还有很多，如有需要我把资料发到你邮箱里 z2 c, w* K5 n4 o+ V6 B) k) n
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