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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
* |4 [: g* f, Q4 \7 G if <condition> then
6 m4 @4 L/ ~) B7 I9 @ <statement sequence1>;: G5 S" L) I; S( `- v, j1 W8 V
elseif <condition> then$ R+ E0 k2 J( ?* O3 p: K
<statement sequence2>; k f. N7 H! z& X% S% }
else
: K$ [9 F# f' P& Z <statement sequence3>;
' b6 k1 E! O. Z- K end; J2 B$ j, l$ O1 o6 D
如果分支比较多，用：
9 V6 d. J l1 T ~ inspect <expression>
: ]7 u' `! l8 Y' o X when <constant_list> then/ F- t" O& a/ ^5 b+ f% l. v
<statement sequence1>;
" J6 ?) ]8 g/ s& h5 x( k when <constant_list> then
2 ~0 I' @- D$ n: ?$ Q3 q <statement sequence2>;. R) j/ ?+ @( b$ H1 v2 A
...
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<statement sequence3>;7 \2 n! t% ^9 `9 m
end;' D8 w. F1 G. s% @7 |3 c. }, T
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2循环语句
; {2 p* L. {' @ (1) from <statement sequence1>- V- y* A* G) D: C4 l' U4 F- W
until <condition> loop; _; o: `7 M5 Y+ V- s
<statement sequence2>;
3 p5 ?8 H2 n) T3 Z end;: U+ O& y& Y- ?: `' h' K& V
(2) while <condition> loop
, k/ @4 o# V0 ] <statement sequence1>;; a& C( Y, ~6 o. E3 p
end;
5 t8 H3 V7 r3 g: `' r (3) repeat
7 z9 u" ]; @5 { <statement sequence1>; w6 L$ z( a! Z
until <condition>;
. m. v! R6 a2 P! q0 i- V5 a7 k t (4) for <condition> to <condition> loop
! Q2 E2 }2 z2 c: n- } <statement sequence1>;
' `% c. E+ Q5 s6 n& d) c0 D next;- K- e4 v2 n" U& T
3中断语句- A5 J$ \' Y; V
waituntil <condition> prio <integer expression>;
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3 y+ R1 W0 ~9 M以上为常用的函数！
5 @( S& l9 ?& m, h还有很多，如有需要我把资料发到你邮箱里 & h3 N: K/ A* D8 b B2 ^! u8 t6 G
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