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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
) J% ]5 Z w8 E$ a1 o: U* R6 v if <condition> then
; R! F+ w9 Q1 T4 a3 w <statement sequence1>;! q- O: J1 e( \# @) F; j
elseif <condition> then# C7 ~/ k o& y6 @
<statement sequence2>;
) h: w! f0 w8 \% v% Y7 g( g! | else
" i, X3 @( {4 L$ Y6 t2 z <statement sequence3>;
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如果分支比较多,用:
1 T- o' ?( _4 v# X inspect <expression>3 z( i+ ~1 ~5 R* o" e
when <constant_list> then
' W$ Q1 h3 P8 w <statement sequence1>;
% v4 J- x7 I/ x. u7 [ when <constant_list> then
" S7 r o8 A% T" l <statement sequence2>;
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else
% }! o- }, R% y0 V0 c$ K6 D <statement sequence3>;1 n8 s q3 J0 Q7 M B% V: Z
end;- ~" c/ I5 q" [% F
4 k4 h& a' c5 V0 B; c, }: H! K% Q2循环语句* o( q: C# X% g1 T# E5 d
(1) from <statement sequence1>
4 I4 I" m, S1 d @+ h until <condition> loop
?( }1 r& `; \( I( ~ <statement sequence2>;
$ v2 C. f3 M- @" A3 f: ^" a end;
& M' [) c4 Z5 Y (2) while <condition> loop
" T# T6 D5 N! R# z" Y& M <statement sequence1>;
/ z/ i! z2 d+ J' k. \ end;2 H' L- | ~1 {# B% [: }
(3) repeat 3 x( Y: K# K- n: ~. L4 g/ l
<statement sequence1>;
~# W- ?- z0 p! L* { until <condition>;
* g! A( K0 M. [ b- s (4) for <condition> to <condition> loop
% |& E- i) s3 P* k) s" a, c <statement sequence1>;' O6 Z" @( e! {& d$ c& c
next;
6 e" z8 Y( e% M3 C M! N, r7 r3中断语句
2 g0 X, F! ?7 p; E3 \ waituntil <condition> prio <integer expression>;6 l9 I3 k) _, s
) v- f( ]! z3 z8 W! G. G6 c! _
7 m8 l( g: p' T2 w- F) F4 u' }7 b以上为常用的函数!/ P7 h. ]' l5 ^8 B' x# O
还有很多,如有需要我把资料发到你邮箱里 " G* q7 Y9 k- ?. W& D" K
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