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发表于 2012-11-13 08:48:12
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1判断语句( u( a* f* j% {5 `, f
if <condition> then
. g0 t9 A$ v0 q9 q- H <statement sequence1>;
! i" y6 C# U, g8 J, Z% w elseif <condition> then
$ I( q7 o/ o! {6 D0 e+ x <statement sequence2>;
9 s. j. ^1 C" k! ]' e3 q else K4 K6 \. |4 J" ], c' {
<statement sequence3>;8 ^- r' U( y. }5 B# ~
end;
4 i7 z0 k' i+ j! p& l/ J5 \2 k如果分支比较多,用:
% S- B; K8 g5 O& u; u+ u inspect <expression>" w: Y5 j0 K. N L2 M
when <constant_list> then
' a# s2 m! K8 o! @* O' } <statement sequence1>;- d2 w* {! e5 U5 f& W m0 P2 q
when <constant_list> then
0 Z4 s. A! m, j- n. ? <statement sequence2>;+ c, p3 p' @& Z7 l7 f
...
4 b3 l( ?, ~! [2 B% I else- W' i& k0 b5 k' p# B
<statement sequence3>;
! Q4 R3 ^. g! @1 {end;7 _* _7 a# f5 B7 }1 V4 Q! k, c
q( y& q5 F2 }
2循环语句! z% F5 v: {& U; Y$ P+ u; k9 ?- q
(1) from <statement sequence1>
/ z( A! t& v0 ~0 F% O) C until <condition> loop5 F$ k+ {4 |6 c8 o! x7 W
<statement sequence2>;
1 i: t# u: z- ?* l* f1 L& z' e end;: U1 a9 ]" ?0 W% J! Z: M7 `& X( E
(2) while <condition> loop* j, J! B% o' i7 `) c3 V% h* A
<statement sequence1>;
( V. y$ g' \0 a/ f9 L# { end;
: w9 N( f, e( _! I (3) repeat
6 W7 d; [8 C$ X; c5 R" C <statement sequence1>;7 H2 h. w( G: M% y
until <condition>;
1 C# \1 w* {; D! I& r, J' t' m (4) for <condition> to <condition> loop
; q( @# p( J: j, }' u1 S <statement sequence1>;8 J9 t S4 |3 A, U+ s b* ]
next;
6 c( c0 p; d1 l/ o3中断语句
2 o/ D$ K7 S4 k9 R waituntil <condition> prio <integer expression>;
% W- z/ @' k+ c7 S* Q. J* p- F# s0 [* o: T- b0 ?4 w- y( p8 g
, f3 K2 C/ |2 y1 q7 O/ @6 ?" T. Q
以上为常用的函数!7 y& o8 } r& E* t& Q
还有很多,如有需要我把资料发到你邮箱里 . B) v' g; i4 U0 s# \) B. c
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