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发表于 2012-11-13 08:48:12
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1判断语句1 e# e5 S& q8 E( f) r
if <condition> then
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: e' E/ v3 ^- h M! b* ?' U& J elseif <condition> then- B' k& Q9 I0 `9 Y- A6 e# W" X
<statement sequence2>;
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<statement sequence3>;
2 h9 s$ v! [" b2 K$ p end;3 [- M$ P, m& l3 {
如果分支比较多,用:
! Q L3 l; R' R inspect <expression>/ W8 G6 b- t2 b2 V% p) T9 b g5 P
when <constant_list> then( h4 B0 B E6 u) q6 t, }
<statement sequence1>;
2 \6 u$ W8 j! g5 N when <constant_list> then
4 e- f! x9 D1 q/ s5 j- i9 l <statement sequence2>;0 z/ W! M W( R% u9 v `
...
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<statement sequence3>;2 A7 `3 Z, `1 ]5 Y! c& u( V
end;& j9 c' C! k6 Y
. {* p: k V5 L% ^$ {2循环语句
' W% V" M& C6 T/ `$ B! T (1) from <statement sequence1>- W" I4 d: d6 C" I* Y
until <condition> loop
0 ?2 w7 M9 m$ s, }# H+ Q <statement sequence2>;: l) ]" |( C! x" N' h6 b( Y
end;
6 A1 |* r0 e9 x/ F) T/ G( [4 T (2) while <condition> loop
9 q# {! h3 }- l9 U# P! T <statement sequence1>;5 d/ Y9 s7 h! A/ Z/ }* K' z
end;
5 g. O4 e2 Y4 J- N/ i; v4 [ (3) repeat
) u4 b& Z/ X% [5 @5 P4 V <statement sequence1>;
7 `* o: T4 z6 \1 x1 @% }1 K5 C until <condition>;
: c& [ b7 A5 t; Q (4) for <condition> to <condition> loop% i" ]/ c0 z7 H1 h5 C% B/ S) A
<statement sequence1>;! \; I, d; R' U) Y8 x& q0 E# F
next;
4 D7 a6 L& P$ P# l7 v3中断语句8 W0 c0 K9 n0 e9 J
waituntil <condition> prio <integer expression>;
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J" Y* M3 j6 Y |: P6 x- Q以上为常用的函数!
5 g4 d3 G( @8 o还有很多,如有需要我把资料发到你邮箱里 1 K( O$ h6 Y0 \, \* D
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