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发表于 2012-11-13 08:48:12
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1判断语句
: o0 g' {' x# O0 \/ j if <condition> then
# W5 z# A9 B, _* H7 a1 B% o& G/ Z <statement sequence1>;
( Y$ o/ D n8 `: L/ m* b. O elseif <condition> then# H* @7 J o' K# u" u: Q
<statement sequence2>;) E/ g1 b6 ?0 j) U' O. u4 V
else , @' H5 ]: Q8 l% j9 ], D" U1 Q: \0 m. j+ C
<statement sequence3>;2 ]" ^% n$ `, j8 F4 _
end;
) _/ c9 z2 c' z- J- o5 `如果分支比较多，用：
8 M+ U' k* o. b p( | inspect <expression>
& [/ i' d' Q, ]; K when <constant_list> then
+ r4 F$ G% t/ o" N, t! a, y8 S. [ <statement sequence1>;! H' l# Y! w2 Z! s( d9 i- B9 |4 d/ x
when <constant_list> then
4 K4 W0 y& y* B <statement sequence2>;
8 q, |1 ]4 ?$ d ...
7 U5 @3 C& ?/ {: k; G# | else
) O: e) P+ a. B <statement sequence3>;
2 p! R, x- | g3 ?$ P( aend;
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+ j/ `0 A. g8 w) K3 T7 j" g# @2循环语句+ L. F. j( Y( X# i& ?, J
(1) from <statement sequence1>
$ x1 T6 E: ?0 O6 s/ I until <condition> loop& ]- l; C3 p9 `" o
<statement sequence2>;
7 U7 }# T* u# S end;
M0 U6 a s, Y! m% M (2) while <condition> loop
$ F" C* P0 u. ] <statement sequence1>; g+ {5 R I9 ]2 A. H/ z. ^9 u
end;
" W+ o3 \1 N/ C7 d1 \4 n (3) repeat 7 o \ v6 }8 u
<statement sequence1>;; I# x( y, I( d) B
until <condition>;
. e: {, I# q4 ~) n- O- U5 U* J (4) for <condition> to <condition> loop1 T) L+ x/ N- N6 ?2 q6 i' U) D
<statement sequence1>;6 q" S4 g0 p: P! S( y
next;
& k% }& |, U+ O# f7 l! G r3中断语句5 a' A3 V3 E& W. ]3 o# b
waituntil <condition> prio <integer expression>;! x) i! {' Q5 Y* x
* j# x# O8 ?# W" d8 y0 _
& n9 ]+ m+ k7 ~& J( }以上为常用的函数！8 {6 g( P2 \+ C8 U% W
还有很多，如有需要我把资料发到你邮箱里 * f6 `$ q. |' s
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