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发表于 2012-11-13 08:48:12
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1判断语句9 |2 C$ N/ b! b' } F' L
if <condition> then* `! C. t+ @; Y8 u5 {
<statement sequence1>;0 x+ B/ b* U1 k: a5 ~0 {* C
elseif <condition> then
4 A, c2 d& h! E. ^$ s4 J <statement sequence2>;+ z5 N% E% o4 I! s
else
) ?. y/ P6 {' S <statement sequence3>; b, t* F, F# A- V* g2 h% p
end;
# x9 t& ?7 U0 ]8 d如果分支比较多,用:
& S1 }9 p$ {5 Q# Y inspect <expression> y% w# ~" R& _( I" w3 P, V
when <constant_list> then
' g' k! E1 V0 h <statement sequence1>;# G: n, Q9 b7 `: L' C) U
when <constant_list> then" U5 X% i! V: j1 ^
<statement sequence2>;+ g2 v' O3 D+ x9 m
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else
1 P; s3 q! F; `+ l1 f <statement sequence3>;& R( {5 T6 Q. m3 K5 J
end;
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2循环语句" `2 @5 w2 p. U( p) X3 J3 k- ?$ r
(1) from <statement sequence1>$ Y$ c# Y( }" z7 Z5 ?# t9 U
until <condition> loop
% T1 d4 d3 c$ {" F <statement sequence2>;; k4 |! ?' Q; V
end;, H/ W) b4 V% l" z( I6 j. Y
(2) while <condition> loop
# [3 w4 {2 X* M& O <statement sequence1>;6 J0 h0 y2 O& |. d
end;/ ?+ ~) n3 K. Z& q! X3 V" L4 Q
(3) repeat $ j0 s/ I# c% F8 P; a' J5 ^0 {
<statement sequence1>;
- L; E0 x+ m2 F) ~' O' H until <condition>;
6 D% |: D) P3 L) u& z) w/ ]6 C (4) for <condition> to <condition> loop
* D* s: }: r: U; u <statement sequence1>;
" a; J1 t0 m' F. q, ? next;* ]0 K4 Q% N& \: M
3中断语句
& }4 J- Y c( d+ N/ g waituntil <condition> prio <integer expression>;* \% ^: d( G' _* p5 i& T
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以上为常用的函数!7 V; Z# @" z! i, D
还有很多,如有需要我把资料发到你邮箱里 3 l& O N- K1 K% ~+ E
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