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发表于 2012-11-13 08:48:12
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1判断语句5 T. J: R) b/ ^8 M0 X& l
if <condition> then
2 h8 X+ K& v6 ]4 P# J <statement sequence1>;
' P7 e2 i$ K7 X elseif <condition> then$ {$ Y+ k( P4 v6 l7 Y5 x
<statement sequence2>;9 c4 b; E' j% t4 e
else / y. N5 M. w/ l
<statement sequence3>;
+ y9 G: k: o4 Y, v& r } end;
0 S; {* e4 i: G3 o- h) J# G如果分支比较多，用：
( o" q/ W% [4 [) @3 a# `" |" V inspect <expression>
7 Z' n- K; w( A9 w2 J$ A. {7 p2 C2 A when <constant_list> then
6 L5 K7 n7 }6 j g. G3 J <statement sequence1>;
, c7 c" x7 }0 o6 D when <constant_list> then
8 X* A) ^6 L, U, w <statement sequence2>;% M) X8 a/ H$ d6 n) }! W q0 j4 |
...
4 G' }& e* c9 S3 e. o else
& m- M( J5 m2 K: N <statement sequence3>;. T# |, \. R, b: s
end;, z4 x, H- Q; }2 @, ]' i" X. l
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2循环语句; K4 f5 }* g' ?! U7 B' Z R
(1) from <statement sequence1>1 Z' A% q8 q/ |- }! [7 U% t
until <condition> loop
# J! C$ O6 s3 i: q <statement sequence2>;
8 [; d! x- u' y: q end;
5 Z1 l$ K; U! |& k (2) while <condition> loop8 y6 _, g. ?8 X0 F: O( {2 ~4 U
<statement sequence1>;
- u% f+ w; h$ w) H3 [6 C end;
% p) B0 E% q E$ J5 V (3) repeat 8 x+ J) ^$ P1 P( r- Q
<statement sequence1>;
# ~' s1 _. b x8 c0 s5 T until <condition>;
8 b1 A, n! O8 C8 P (4) for <condition> to <condition> loop2 ^1 @- O6 Q" i' A( ~6 o6 R+ n# k' K" O
<statement sequence1>;! E, u( v9 m) ~, M9 Z Z
next;+ L+ ?7 U7 q R6 ?
3中断语句: Z& ?. W* R! M! k* a. `& X# l1 u
waituntil <condition> prio <integer expression>;
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以上为常用的函数！, P3 f$ _3 }$ U
还有很多，如有需要我把资料发到你邮箱里 ( J/ A. B3 ^( c) X$ |- d
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