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发表于 2012-11-13 08:48:12
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1判断语句0 _( O' z7 {8 J. v9 K7 O. J# J& P f
if <condition> then
' x+ p8 T6 i' U8 F <statement sequence1>;
, ^5 ?+ z" ?( H% R5 B elseif <condition> then6 p& u3 R( v$ J4 h2 x9 b( Y
<statement sequence2>;
! g H$ i$ K1 }* j6 U else
- s) H; W8 n8 M$ P+ D <statement sequence3>;
1 U/ n, ~* f/ \/ t4 D0 P end;
3 _; \" P# |+ _. r3 @: }如果分支比较多,用:
4 ]8 m' s9 c1 B inspect <expression>6 p. O# a# B6 m( u! s. P) t
when <constant_list> then
! z, a# K+ ]4 e+ t0 @# H& O5 }9 T <statement sequence1>;
, F- {0 Q2 }0 r& P: K- @! T when <constant_list> then
% Q, j4 C; {+ z. ?6 r8 t2 j <statement sequence2>;
B8 ?3 ^* }5 R; S& D& I ...
: z: q4 v4 w) `& i& w g else' q8 V, G; }0 B/ O U1 a
<statement sequence3>;) o. c0 X; t# `' j7 I
end; x, ]$ }+ a9 d$ h F' g8 _
8 |1 k* Z; j- Q. x7 h9 f2循环语句
7 {( N" K7 |. x; u/ C l (1) from <statement sequence1>; u; f' d2 n. o* x
until <condition> loop* @4 m* z# L; `" \5 t+ z3 L
<statement sequence2>;
& p$ S% }& z- k& x" B end;8 w& e7 m( {& g
(2) while <condition> loop' k: M! g, k) l* q8 M+ T0 ^
<statement sequence1>;6 r; U$ s0 s" U o! s' O( ?7 o( y
end;
" ^+ ?! f" W9 f+ C (3) repeat $ P0 k. B. |1 G% Z5 \: g2 Y. G6 X
<statement sequence1>;
& R3 P. q1 e; T' W/ t1 { until <condition>;
1 N/ r" m; ~4 P9 s (4) for <condition> to <condition> loop" P) c* W: e# F
<statement sequence1>;
) A3 X) \3 G" V9 i* y1 n% \: p- r next;
h+ Z1 ?/ u5 L- Z3中断语句
* Y* Z- S: l& q4 K" T" T- c* c: | |6 K waituntil <condition> prio <integer expression>;- O5 \* l& k$ I- t! E
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以上为常用的函数!
5 z% h8 V! ~/ L2 P9 ~/ T还有很多,如有需要我把资料发到你邮箱里
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