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发表于 2012-11-13 08:48:12
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1判断语句# @8 y" q0 b: x }7 r9 k3 e) |
if <condition> then
% I( Y7 n$ f" Y: Q# @! B <statement sequence1>;# j2 G2 `2 ?9 g) ], w2 i
elseif <condition> then
, I# E; {, Q) ` <statement sequence2>;
3 |2 N* M6 ]( j4 _4 v else / H+ m% R) n' \( s0 m" |2 m
<statement sequence3>;+ e: b9 Q8 K" O9 a
end;, g/ i) p1 S8 ?5 ~- s# a
如果分支比较多，用：
8 \: q) u. }# j( F7 P: _: k inspect <expression>
' M8 ?7 c0 V; A, R: `, u when <constant_list> then
% \: o1 r7 l+ U <statement sequence1>;
3 | R( s. n& M- O0 y when <constant_list> then
/ v$ | q; Q2 v& D. C1 ?% S <statement sequence2>;# v: ?4 d6 J; X- y
...* `3 C% Q: z; X3 c& _4 _
else
% P& q+ a% T1 W# L% h <statement sequence3>;: s# Q4 h b( |" B3 @1 X; _
end;: i6 O" T% g! y! t9 K
0 z: i6 s( W; e' p5 \9 [ I- f; Y2循环语句
" i* T9 ]. Q: H! N1 f5 a" A8 v: j (1) from <statement sequence1>
' e1 l' D4 }4 i$ g5 Y* R( [ until <condition> loop
/ y5 h! D5 f' p8 S! ]$ { <statement sequence2>;6 N g1 V) T2 z# j+ o3 B
end;
k. s* z/ W& P9 t* k8 }: i (2) while <condition> loop; ~; n; U. a0 |( L( M
<statement sequence1>;
# R, l4 ]% m4 D4 { end;
9 e* P4 D( w: a3 H9 f (3) repeat 8 [6 R0 ]! Y/ H9 D4 `* t- U/ A2 L6 Z
<statement sequence1>;
1 Y0 u7 Z9 a/ l/ v A2 h# Z, J0 C4 q until <condition>;
8 _$ w5 U5 J( S (4) for <condition> to <condition> loop
( u5 h/ P- U# ~! g, l1 {; s <statement sequence1>;
4 J' l1 e- J+ P/ o+ v next;& |% z! J" t; Q& p& |! }9 X
3中断语句
5 q s5 A4 r: I# ~+ [! J4 ? waituntil <condition> prio <integer expression>;& ?6 |! [! @) ]0 p# ]/ T6 \
8 v& `& m' R0 r, o
! [7 ~+ D4 G$ _1 ]" w1 B
以上为常用的函数！+ Y4 |1 Y. ?: }, X1 w7 |+ X6 W
还有很多，如有需要我把资料发到你邮箱里 0 Q& Y# W; ` R. m' b2 R5 k" J5 }
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