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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
, j- {! s* j. u. N if <condition> then4 _+ S7 ~! F: r, T8 }4 q$ T' {
<statement sequence1>;8 g3 \" S7 q* G3 u) w1 u# M$ [
elseif <condition> then7 G q$ _) b/ \
<statement sequence2>;1 E7 O( G3 |+ J& S5 V- G; t ]- Z6 {
else
% I$ {: p# U3 U* _& {" f <statement sequence3>;9 G4 \3 a; K8 w e1 O2 n
end;
8 V8 G' G. r; m! y$ V$ w3 h如果分支比较多，用：# o* L# X+ L1 u* f
inspect <expression>& g5 [. o% k2 m9 F
when <constant_list> then" @8 R k: D, X& s" Z) {
<statement sequence1>;
" q1 a2 D4 @2 m; y. t4 G2 O4 j j when <constant_list> then
# x7 y' G1 T! V5 n <statement sequence2>;
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else
9 b z2 p! g0 k2 r <statement sequence3>;- _/ g0 ~7 i# L
end;# N( Y4 S) r+ z( h6 C9 b9 ^; N* A: ?
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2循环语句
7 ]1 |2 `, M X2 m6 o (1) from <statement sequence1>
4 y+ I$ p3 W! {* Z until <condition> loop, G; u5 | [6 o. \" ^# U% y- t
<statement sequence2>;: j/ l9 W+ X6 ~& L: s) Y; q
end;9 k4 B& P- N4 {$ n1 p( D9 J5 W
(2) while <condition> loop; H7 u7 o0 n6 U; o' ]) ]4 T
<statement sequence1>;
. V1 o7 i9 u# O1 |0 R end;8 C; u8 D: y# N- Z: r) Y
(3) repeat
) h; P6 z/ D6 Q7 Y <statement sequence1>;
, W( \+ t& l9 n- \ until <condition>;/ o1 H: k/ D+ x' |6 E
(4) for <condition> to <condition> loop
" A8 [( p) w( R <statement sequence1>;1 r7 r2 ^) M' Q; E# D; Q
next;
% M! Q( [/ x) p) `4 I/ l% D3中断语句
3 d7 V. p. Z7 R1 E g6 k' l waituntil <condition> prio <integer expression>;* K( {- y) f% {/ |& Y5 y/ o- a
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( f7 j! ^% T" B7 v' h+ f以上为常用的函数！
5 {# w7 j+ m( Z9 i L还有很多，如有需要我把资料发到你邮箱里 * H+ E) r2 L! s5 Q# J" M
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