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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
+ q! R" V$ |8 F6 {; B5 c( O if <condition> then
, c \* ]- i1 C5 N" ^ <statement sequence1>;
2 L8 i- I" N5 g. o9 { elseif <condition> then0 R, e3 x1 B3 I) _# s, D6 N
<statement sequence2>;7 n5 H4 B6 C" J& [9 {. F" Q* N B0 C
else 6 U9 ~( {4 |2 r1 v9 ~ [
<statement sequence3>;* l0 M+ a( S& ~, Z( `0 M! d
end;$ F1 Z- p# Y2 N! |4 F
如果分支比较多,用:! H7 N a: [4 z7 Q) L
inspect <expression>
5 q, W* H( N+ N5 f5 q when <constant_list> then/ Y1 w8 \. |4 I7 K3 r+ S" K4 e
<statement sequence1>;5 l/ n4 @' F/ i9 }+ Q
when <constant_list> then6 ?; o i4 j5 ?- u. g
<statement sequence2>;
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else' i' ^" p: @0 g# X0 r0 y" ^ s$ o
<statement sequence3>;
; h! f# q0 G9 ?8 K& K# ?end;- r4 k6 q. \* ^1 R
; d; y" S0 q4 A# A, i2循环语句7 r, x! p! G$ x# H; l; [, i
(1) from <statement sequence1>4 {+ B" S) {; ]5 ^+ @) A
until <condition> loop3 S2 Q. F7 w! M" A4 K/ j
<statement sequence2>;1 c, v) K g) i' e# `; H+ `6 [
end;
4 Q! I" [' V# ~- @' { (2) while <condition> loop
/ p8 _: _9 G K% U <statement sequence1>;
# ^3 C2 O' T' r3 X5 O( s end;
( f) a$ \7 D/ w) R# {5 X$ j3 g (3) repeat * D: W6 @$ k1 g( q
<statement sequence1>; m$ e- i6 d) q3 h3 a2 D
until <condition>;
% C+ m" [+ G8 n3 s+ [8 M% d: g (4) for <condition> to <condition> loop- _* S. q5 B. S6 _& C3 z: A, Z
<statement sequence1>;, `+ U: l3 O6 v8 d2 K
next;# c* S* K, G2 K0 ]
3中断语句- a0 V" _# k: J; e1 h# x
waituntil <condition> prio <integer expression>;
* P6 I# l8 n i' t, z" j
) ~3 n+ o$ }" W+ o* `: k$ C; f* r- ^, m5 c7 G) B* N4 @
以上为常用的函数!
0 z6 Q g8 @* i# ~ w还有很多,如有需要我把资料发到你邮箱里 4 a8 N' q% P2 i1 O$ f# w, ~
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