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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
! d G( k) W3 t; S if <condition> then
]4 M; a! H0 o. ^7 ]; q. A4 C <statement sequence1>;
- Q1 Z' ~# k) ~5 Y elseif <condition> then
4 G8 c0 X0 t0 q5 L <statement sequence2>;
' f: _: ]8 p: R% O else / ?4 f* c% j* p
<statement sequence3>;+ J* g8 {- B' [' P x! [
end;7 {4 m) |8 E4 D: [- [# M* \
如果分支比较多,用:
- d# Z! G# C1 S0 d5 n1 U# t8 Y inspect <expression>
# y& b/ {( e/ [) A when <constant_list> then
. l; }" a. k0 H3 L <statement sequence1>;
W. X* P7 {5 r h2 L" h when <constant_list> then- X9 D9 O( R* x4 u
<statement sequence2>;
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else
+ F4 u: G+ l$ l <statement sequence3>;
# V4 g/ c8 c7 N) w+ G4 `end;) g: c$ D, k" P( U; v4 a0 u/ q
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2循环语句9 l' ^: j0 P/ s8 _+ S" r+ p9 [
(1) from <statement sequence1>0 Q/ U: p: m6 B+ i' @
until <condition> loop9 C! u. \! n* h+ u( j% y2 D
<statement sequence2>;
4 x, J7 l) I7 }/ \ end;. o6 x4 R& _) m$ R8 a
(2) while <condition> loop
# p/ C* B" h% M% j <statement sequence1>;
' ?; c4 U: s: G, [: G end;; w3 ]& q7 }: B8 L+ c: w) W; l4 b
(3) repeat $ K( r2 X$ s7 c' r
<statement sequence1>;
2 ]8 X0 F* ]! A4 ^6 p0 y until <condition>;
" N+ H( n ^7 A5 l (4) for <condition> to <condition> loop
: i6 r) Y- }0 ?4 j( ~% ~ <statement sequence1>;
6 v% O, Y2 A! K: v next;
. G: I; i, D5 W3中断语句
' k2 t- }& o8 I* v ?! _ a! K7 q- D waituntil <condition> prio <integer expression>;
, `% y" F0 C% ^) L; @$ V' t* R
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以上为常用的函数!. C( A0 F8 n. W( v# J
还有很多,如有需要我把资料发到你邮箱里
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