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发表于 2012-11-13 08:48:12
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1判断语句2 t7 w3 o* e/ `, [5 |
if <condition> then
& a) ?9 j) m- x2 R; z <statement sequence1>;
0 [/ S# N# [) p; D+ [ elseif <condition> then# I6 N! Q5 p# |. G
<statement sequence2>;1 [- T) R" N& i' b5 O5 @
else 8 O" E& Y5 d0 C
<statement sequence3>;
3 f5 w8 e5 _) L end;
. n% l+ |! w! e" C5 O e# Q4 z如果分支比较多，用：
8 k0 P& U4 _9 Z+ \7 x, r% h8 U9 e inspect <expression>( ]' L L" m; e% l, x% x
when <constant_list> then
g$ n8 x4 {% W3 ~; O1 j t# _ <statement sequence1>;1 J+ K/ a7 j' @' Y* Y# J. |* A
when <constant_list> then
( h8 E. C i" g8 C/ f, f <statement sequence2>;9 j% C7 F3 m% M1 G% M
...! Z/ v5 d6 J8 ?+ Z. b) ]7 F5 v+ L9 n
else6 ~4 w7 j! N# M" V& x
<statement sequence3>;/ m/ z, c! R! V2 x' ]' }
end;
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2循环语句
) [6 _0 _, W/ u9 m# c( ^ (1) from <statement sequence1>
# a0 I7 X: V- x+ @0 g' D; h until <condition> loop
3 r9 B5 L# r& d0 Q: g <statement sequence2>;
% P$ m* W% x4 @" ^3 A end;
$ f& u. C9 m0 Q! i5 Y5 m! x (2) while <condition> loop, a7 a5 F, ?% {$ e
<statement sequence1>;0 e2 Z" [9 X4 u4 \6 D
end; j, y+ r) ?( \
(3) repeat / z3 K$ a8 S/ K4 M3 d1 S
<statement sequence1>;2 h( u, e$ M) {% z9 @: C$ S7 }6 I$ N
until <condition>; e, p4 b0 ~. Y( y% K7 n; |
(4) for <condition> to <condition> loop! T$ F" T8 r) I
<statement sequence1>;/ c& M7 n1 j. ?( Q
next;5 a1 y# W0 I5 O9 x' U& c$ Q. I
3中断语句
1 [1 B) }) D9 A' C/ _. Q waituntil <condition> prio <integer expression>;
" R N, W+ N: _7 v7 A, ~+ \+ {. a* I; w1 Q+ r3 d, x
4 J+ {# K+ u1 n! X4 Y以上为常用的函数！( f& |4 w* x! s+ e' L0 ^- k. |
还有很多，如有需要我把资料发到你邮箱里 # ?1 o3 E( \4 y1 f) g3 o- P _4 E( T6 ^
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