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发表于 2012-11-13 08:48:12
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1判断语句
- t4 |. G% \$ V) |' H/ { if <condition> then' p& J% J' L$ Q$ _/ I% o) ?
<statement sequence1>;% g9 c& Y6 x, w2 { t
elseif <condition> then
6 p4 n; n, _' Q$ u7 _ <statement sequence2>;& B* L) D1 B7 T
else
l) D$ t5 K- {. D6 ~9 q1 @ f& w5 b <statement sequence3>;
1 H" [- B9 X! q. W/ X q end;" e0 T2 S) G# j$ \6 P5 ]3 u4 H: `
如果分支比较多，用：1 i0 {7 A9 ~$ @: p2 A- E+ {
inspect <expression>
a- @5 b/ ?: O4 f# o& z; I& v when <constant_list> then# g2 O' ^2 C# p0 \
<statement sequence1>;7 Y |% P$ g9 B, X
when <constant_list> then. d' H( S4 G) [0 D3 n, c, J/ T
<statement sequence2>;
* l- a9 e) M1 B5 `' V: [ ...
, q F# o; @1 m+ D# G% M1 u5 `/ X else
- H7 r2 H; i& C( n3 U! l <statement sequence3>;
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9 k+ h7 E, x. c2循环语句
0 e( V. G8 W& F( y, Z (1) from <statement sequence1>3 o+ e6 i( q, y/ s
until <condition> loop
! ?" T/ V. l9 m* S <statement sequence2>;- h+ F2 G, ]# A2 Z6 `; \
end;
+ n4 h6 C5 x/ B8 S( o (2) while <condition> loop
' E0 ] X! H! W( p Z( i <statement sequence1>;
2 d, m/ z4 Z; e( b7 m end;
& X- D2 w- k& h, `% T$ z5 D (3) repeat
8 h) X3 ]8 K2 \- F <statement sequence1>;
" K7 p, i* }2 Q8 b. E until <condition>;# y+ c v$ p& D# h) m) X
(4) for <condition> to <condition> loop
0 O3 {5 a0 C$ Z8 s6 N3 w1 \ <statement sequence1>;% E) r& h4 i4 p5 D9 b. F; J, X( v
next;8 r8 v' m7 N. A7 m$ Q$ j1 u
3中断语句
Z4 K0 x9 h5 T/ z6 ?! r waituntil <condition> prio <integer expression>;
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; w5 k& G& h+ V2 I以上为常用的函数！% x7 a& ]) `' M" h" C. v+ ^ ?) Z
还有很多，如有需要我把资料发到你邮箱里 * z1 i; B; u& h- _
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