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发表于 2012-11-13 08:48:12
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1判断语句2 s; D r( k( A2 t; c1 i; d
if <condition> then
$ Z8 U* n. h5 E$ d <statement sequence1>;
: L8 s3 ?- l0 Q7 m2 n: ~7 O" m u' i elseif <condition> then
" B( X) x, R* y0 F& o <statement sequence2>;
! n1 u" u1 ~8 h& Z else " O! [* m5 a, W# W$ V( F
<statement sequence3>;
4 G T% `$ K* N: s c7 ?1 C end;
2 j$ b$ R6 b, R0 r# f0 }$ }, A如果分支比较多,用:
: e# _5 t! I5 y& c0 k. `0 ]; } inspect <expression>
0 i1 L( t+ s4 G5 L) B- B when <constant_list> then
_4 ~2 m+ O- C/ ^ <statement sequence1>;
: y! ^2 _+ X0 b) E& c when <constant_list> then
4 e& ^( m5 @9 \2 m <statement sequence2>;
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else* ]. H. E3 ^- t- _) Z( I% @' b
<statement sequence3>;9 Y* a' C" x. p# O# N' {4 x
end;
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* ] f9 l7 _1 t- W/ m9 P6 O$ \2循环语句
; `4 c5 O4 {* p- F0 J (1) from <statement sequence1>5 N# k b0 t) g9 q) U5 W8 D
until <condition> loop2 `% j, O- [' c; N5 g5 C; k
<statement sequence2>;
6 ~& W% r+ w# Q% h% ?3 a5 \# I0 u2 A end;
& ?! s; D2 M! r4 G% w0 z (2) while <condition> loop5 n# h. ?7 m6 F- ?- \+ y% {
<statement sequence1>;
) X3 f, g5 d- h# L end;
. C. a. a, {0 o" U& o/ ^8 C% Y9 y (3) repeat
; Y$ E( S! j* I$ o8 d <statement sequence1>;4 Y" V- k; B. b3 L! v" a, k! b
until <condition>;
& X+ F" P8 {# d$ Y2 r (4) for <condition> to <condition> loop0 S; w& I3 z8 v" e- I
<statement sequence1>;
7 }; |! T% ?4 d9 ]% ]" j2 Y next;/ A4 O& ~2 ~! ]: t4 G
3中断语句2 f8 X! t8 H+ y$ M% h/ U" Z) s
waituntil <condition> prio <integer expression>;' p& H# r# o& Z( [* W
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以上为常用的函数!8 p D4 R/ X# s* o+ V
还有很多,如有需要我把资料发到你邮箱里 # [! r3 t$ c& b& [; y' ]) H
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