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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
' P; F, e1 b) M# ^, M1 X, z! P if <condition> then* l# Y# R0 k: P# _, C! Q
<statement sequence1>;" O2 I ]) t7 s$ l
elseif <condition> then& r2 Q; g1 D/ C' ], ?1 o* p8 j' J
<statement sequence2>;) u. m+ f+ S* B6 C
else 3 M; g( G" y; \* [4 R8 h
<statement sequence3>;6 Q2 o2 a& y: `: G
end;6 D# g0 L( E: I& K' H# w) l$ J
如果分支比较多,用:
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when <constant_list> then
* Q+ t. [% b2 z$ v- U/ ] G. q* _ <statement sequence1>;
) z9 n( O+ h# `* s5 t when <constant_list> then# t1 @* R. P2 {! @9 ^2 K
<statement sequence2>;
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else
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0 d9 V$ h0 T$ j' }end;
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2循环语句8 N& x( p, a t a
(1) from <statement sequence1>) |/ c6 S4 s- |% f8 x3 q9 I
until <condition> loop# i5 y& Q8 {4 N* G s
<statement sequence2>;( U6 e3 q/ A. B& u2 {' n# F" B
end;
' c/ O) L& v7 y8 k W, B9 W0 R" Y5 V (2) while <condition> loop
0 D, \, X8 h; p. ]9 J <statement sequence1>;
# ]6 P* {) Z6 O! q end;
# V) s4 p, ?+ @. e* q; n2 \4 G. k (3) repeat
1 h( J/ E) V, E- @ <statement sequence1>;% I9 M1 Q6 p+ t
until <condition>;1 A% s7 H7 B" B) X* e' ~
(4) for <condition> to <condition> loop
" v% Y2 W6 ^, K( z <statement sequence1>;' t* o( N* J/ s' j4 U5 X% }
next; F: u5 W( K; k. _: j. {; v; ]
3中断语句
# r* n! s2 G% c" K" i waituntil <condition> prio <integer expression>; c, P! X3 R- d$ O/ o4 c+ @
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6 c- R6 ?! s9 ^$ T以上为常用的函数!$ j9 |% I! C+ |
还有很多,如有需要我把资料发到你邮箱里 + L1 r L% ^7 j; _1 Q7 `& {
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