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发表于 2012-11-13 08:48:12
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1判断语句
( [* }2 o/ d) Z if <condition> then' }, \/ Z- V7 |8 g
<statement sequence1>;
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<statement sequence2>;2 h0 z4 D+ ?) }6 W
else
& G3 s# P W9 b/ t <statement sequence3>;; h4 Q S# d8 s' d/ i* |
end;2 q+ A6 R3 H6 u& q, ]9 f
如果分支比较多,用:
5 Z4 v4 ~) P! C4 o& w% ]: J. Y X inspect <expression>
0 G) h/ H/ E& ^# |6 t2 p when <constant_list> then$ R2 K. B+ |, w. W2 o+ p
<statement sequence1>;- X6 d; D5 w) _, y
when <constant_list> then
7 J& v) z* a1 e0 ]; _" N% P' c0 f <statement sequence2>;- j2 t0 _$ B0 n% i, L
...8 c h8 g& B" [: @
else! B7 ]. N8 R S5 O5 D
<statement sequence3>;
/ e3 t4 k9 R* M/ Oend;: a0 T' M" l; ~7 `2 P) T @
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2循环语句% T. @- I- J, I; g1 F
(1) from <statement sequence1># O8 l" ^: L7 B
until <condition> loop
. M$ e/ V5 L7 M- \3 i <statement sequence2>;
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(2) while <condition> loop
6 p" i6 _9 A" r3 w <statement sequence1>;
7 h; i1 R! a# ~6 X# G end;
7 h4 `% Y) b; N3 F D (3) repeat " p' b7 z) D: @1 m
<statement sequence1>;
, e* c1 \ d- m6 O- W3 L+ l until <condition>;
$ p7 v8 o# \" i, }# `; l2 J (4) for <condition> to <condition> loop/ u% B5 e S) L
<statement sequence1>;' G/ k) u( a8 P$ x7 B4 W2 I
next;
! \. R4 x$ ]8 g. r6 G3中断语句
- B+ V( v0 ^+ P/ g waituntil <condition> prio <integer expression>;
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L. Q2 {% J" \# |8 m) X以上为常用的函数!
: P. e' L' q( T9 D6 X# R还有很多,如有需要我把资料发到你邮箱里 0 }! y2 g3 j/ e E# z$ Z5 d2 y
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