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发表于 2012-11-13 08:48:12
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1判断语句( ~6 _7 r5 F" ^) C! g: x7 i, {
if <condition> then
/ x% k' X0 K% \" R+ a& T, w <statement sequence1>;6 w% {! k x! _) n# J
elseif <condition> then
! y3 }: T9 Z# ]' r <statement sequence2>;- U* _- N1 z7 S
else q x" W6 v; I$ ~- Q
<statement sequence3>;" x. h6 B5 }# y8 v+ m
end;
' E" }+ i) K' t7 P; l( v- a8 U* U如果分支比较多,用:
/ _( r M- d3 i4 [9 N3 R inspect <expression>' j7 A; q( I* W: A5 {' ?" i O
when <constant_list> then
`& z# g5 Z# t6 l$ H <statement sequence1>;
/ S/ L8 a2 Z7 s* O# ^3 }+ y when <constant_list> then4 A! p* ]! {8 ^
<statement sequence2>;
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else& X K7 k% |7 {. @" v
<statement sequence3>;! r6 r( Y: `. M) V3 E
end;
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2循环语句9 Y( |3 Q% r0 r9 X# l
(1) from <statement sequence1>- N7 G2 G w4 h
until <condition> loop1 N$ Z: R, _5 \# H
<statement sequence2>;
7 H9 r8 n# N* k; C end;
! D) R5 N5 U. M4 |4 g, L/ s. _" g (2) while <condition> loop
* j/ A1 v- g* e <statement sequence1>;" L4 }; q* C$ |9 g& m1 V
end;3 w% @" t1 n4 N& i1 @
(3) repeat
; S O' O( B: H5 E4 s5 g, E <statement sequence1>;
7 _, l) p" I0 E8 I& \. { until <condition>;1 k. ]' }+ N2 i4 I, n
(4) for <condition> to <condition> loop
2 p& H: Y) J& I <statement sequence1>;6 t$ A4 I, y* o( u* {- v
next;( T% a- P y0 H3 U
3中断语句
* ?, _. ~% t/ J+ U, [) D( M- K waituntil <condition> prio <integer expression>;
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6 v) T* p9 d& n0 U5 n/ C. ]5 h以上为常用的函数!5 S( K0 C6 k# H: a1 C3 |/ R& K2 q
还有很多,如有需要我把资料发到你邮箱里 * Z" _; t& Z) C- \* q9 B
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