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发表于 2012-11-13 08:48:12
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1判断语句& \1 t8 R: ^2 s5 @+ y! z! S
if <condition> then3 J7 s/ E: ?$ ?' H
<statement sequence1>;5 `$ G4 d4 h( x8 F, k
elseif <condition> then6 ]8 ]4 n- U4 ?9 N+ I3 u$ x: q% F) F, h
<statement sequence2>;+ P* H- G, J1 S& f; ]
else ; S. b0 A% g' y0 o2 Q" o& V- K7 a2 i
<statement sequence3>;
6 s% F! T( k+ j8 Q7 |; [( R t- m- `, t" w end;
4 d$ ]$ Z. L, r) p如果分支比较多，用：
. A; p. h- W+ T7 }1 X- n( h- a: F inspect <expression>
) s8 l0 w8 i% P0 u4 o6 P5 J! Y5 o when <constant_list> then
! M9 B1 _, \8 i <statement sequence1>;0 h% z0 W% u& y. V
when <constant_list> then
% U" v# P9 k/ d; ?" \+ y7 K1 s) C <statement sequence2>;2 M; x C( R6 f1 J$ p
...
' M( o& M& Z _" g% ?% `2 x else
: X1 ]7 t( N# B/ O& u2 w <statement sequence3>;4 t3 P9 v- ~9 }. }4 n: o
end;
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( x ~) E% U+ k4 g( L2循环语句
$ S1 \/ x7 f$ ?* u" L* F6 C% w8 S (1) from <statement sequence1>7 }2 z6 v6 Y9 k0 \
until <condition> loop
! J& T. W6 T5 c" S <statement sequence2>;
7 M/ ~$ `" [0 x1 }# v end;
- w5 Q5 n/ i+ s7 r9 z( q) R (2) while <condition> loop
, b/ Q7 J) r# } { <statement sequence1>;
+ ~6 D. d4 m$ C8 E0 A# a end;
) `4 W$ E% g1 x' A i (3) repeat
( V ^! w& N8 u* q% E# y* \ <statement sequence1>;1 X' O! W7 u) l' B/ z6 P0 L
until <condition>;
7 |& o+ N' i% ^$ K (4) for <condition> to <condition> loop% m! [: N; ]. _; K% j7 E
<statement sequence1>;
$ r9 y1 ~2 y% J. G next;
. P7 e5 _" z" _+ E! f8 n, u* ?3中断语句
1 v. z& o- W) u" d# C9 w. @ waituntil <condition> prio <integer expression>;) _( P* \3 v! m: K9 ^
2 P0 Q5 A/ d: V1 h9 `
* T9 n! H u X b以上为常用的函数！
( G5 { d T T还有很多，如有需要我把资料发到你邮箱里 * W+ ~5 k6 y3 C: g
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