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发表于 2012-11-13 08:48:12
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1判断语句
5 i w, j: a. k0 F/ d if <condition> then
4 v8 w2 G# ]. U# N, ` <statement sequence1>;
( X# R, A+ G0 w& f& d! ?) W elseif <condition> then. |; K* _% Z- L6 O% C! ?, {
<statement sequence2>;
* b# C) Q9 h% W! v7 Z+ Q1 ] else
. _( F. C8 n ~. N+ h( ?/ K <statement sequence3>;* G# ^' P( I2 c: K5 s/ r+ O
end;8 h! O6 Y3 o+ t$ g- J
如果分支比较多，用：
+ M! C( G; K* G/ R! J! ~; S# } inspect <expression>
1 z% Y$ n9 H5 c when <constant_list> then3 D& J8 x: t6 G$ _
<statement sequence1>;7 p9 J8 f2 h) N, Z# T5 @
when <constant_list> then& E3 C) V7 Q( Z0 g6 Y9 }8 [
<statement sequence2>;2 z8 B- @- B) {% Z. e: ^9 D
...& ?" j' h! d! g! H7 Z z8 h3 D$ w
else& I3 n9 n' k/ W( L) O3 @
<statement sequence3>;
g% |4 m- Z/ l! n o4 bend;
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, W, }7 x2 W4 V" _# \. t* v) Q2循环语句( N, X5 Y+ s, x" f8 P' `0 g! f9 l
(1) from <statement sequence1>
) ^7 |! g3 f! V w1 `3 W$ ]$ D until <condition> loop
: N; w/ ~& M( B u: R" g. X+ I1 f4 W <statement sequence2>;% q4 S, ]$ \6 d! V$ w
end;4 l0 i: }# h5 y& {& G! p0 r
(2) while <condition> loop0 U6 z+ n% }/ p% J; X8 R$ S3 |* f5 V
<statement sequence1>;* j4 o9 f1 n( ~) H' }4 J
end;
/ S/ f1 _8 l2 O (3) repeat
/ }1 v' k. B7 e" W* s1 |" \, ~8 B <statement sequence1>;- f+ R% B5 w W+ f) F% P
until <condition>;- e. q2 e7 o! l. Q& v7 v" k
(4) for <condition> to <condition> loop/ }( a2 {0 t- K6 m- @) Q# j
<statement sequence1>;
& c; q& B, j( G next;
! v4 I' ?$ W# N* w6 f4 [3中断语句
" j$ b* s6 K, G6 L) d$ {# i waituntil <condition> prio <integer expression>;
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以上为常用的函数！
/ Z# m- m, Q; [ p: b5 f0 t; m) m还有很多，如有需要我把资料发到你邮箱里
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