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发表于 2012-11-13 08:48:12
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1判断语句: v- n# k9 N* h- |* |4 P* P/ ~
if <condition> then2 U ?( r* k( A) E1 {1 k
<statement sequence1>;) f3 w0 A8 h" P! Q
elseif <condition> then
1 R+ M+ f! l) f$ o: \ <statement sequence2>;7 F- ]7 P7 h y1 {6 C. Z5 Q1 D3 E( ~: S
else
% V, J5 f4 f; l <statement sequence3>;# e" D0 C7 T) F% ]9 i
end;, [# W% m" t$ @7 a
如果分支比较多，用：
" v- A2 N: f* q* y' O2 D inspect <expression>
( s! w) v0 S! U* F1 _8 g7 | when <constant_list> then* w3 O, ]8 {" R1 v; D" C2 O' G
<statement sequence1>;/ m- h/ o5 u. O' ~
when <constant_list> then
7 K) z" g, V( _7 b1 |8 [( _! U <statement sequence2>;7 O. U# |% g. I9 ?/ q8 U T
...
. W+ ^+ j* S: R& c& ] else
5 c" A; y* q: q0 p" d3 ? <statement sequence3>;6 U. @0 V6 A2 U1 \& v0 }& F
end;( p" x7 t7 k1 w: a, F) i' u1 X
9 w/ i8 N% v9 r2循环语句# q4 z4 M) S% i" Y( X5 b) {
(1) from <statement sequence1>
" y, l: L* a5 h% h: j until <condition> loop4 ~7 {+ M: x" r9 Z
<statement sequence2>;/ |9 B2 N& F" }% w- p& h( X9 I
end;
+ z, ?- X% t* r" v' ^5 F (2) while <condition> loop
- G9 ]5 M* G( v+ B- ~' u7 ]* T) y <statement sequence1>;
& a" u) q5 i& n$ H" L5 R+ v end;9 C* a4 r/ ^( U+ o, K/ p
(3) repeat $ b8 u. }! z# V# @
<statement sequence1>;
. E4 V: ^ o& z; Y until <condition>;% {1 y- z6 D: k7 r1 V$ O
(4) for <condition> to <condition> loop
2 V$ K" J, H0 n <statement sequence1>;
/ A% `/ T& _8 n next;
/ ^: O7 ^# |4 M% l& U* ^3中断语句
7 c, ^: H/ X9 I waituntil <condition> prio <integer expression>;
# i# D4 `/ g S: I( h0 u0 L: d9 g3 R$ ]. A1 j" W
+ B* F8 T2 o" k. r4 V, f以上为常用的函数！, \$ Q) F j' Z
还有很多，如有需要我把资料发到你邮箱里
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