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发表于 2012-11-13 08:48:12
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1判断语句 D' o. r" v, m+ y5 b# B
if <condition> then- K, k* d3 {+ q: y$ l8 _
<statement sequence1>;" f B, H3 C+ z$ m6 M p5 ]" ^
elseif <condition> then. M5 s; v$ X D, V% V+ S5 b( _
<statement sequence2>;
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<statement sequence3>;( |+ [5 M* C* P1 v0 F1 K
end;" r1 `# L; j7 D1 r8 l3 B
如果分支比较多，用：
1 r3 R" C" G; I7 ]& v, T2 @1 ^ inspect <expression>& Y$ O( ?: }4 Q7 M) {4 c7 o& q) N
when <constant_list> then
9 W2 \3 N3 t, h! l$ u <statement sequence1>;0 w0 g3 g5 |6 D7 M- Y6 ?
when <constant_list> then
- N/ b" `" y4 U' g( }+ q4 g) s <statement sequence2>;( L* z" `, C3 {3 }! v% T- n" g6 p
...) I6 L+ w: N: H' l, N0 S+ e7 i
else
. c1 r8 W0 L) ~: F) m <statement sequence3>;
9 Q, U+ m1 v' O8 Z4 P2 j7 [1 G# D& ?end;) K( l! z0 @3 {8 _6 @3 C5 v% I
4 q2 C% T J; o$ @, N2循环语句
! V1 ^. P% F( r1 T1 S) u (1) from <statement sequence1>
$ i7 ~: ~' i1 C% @0 A8 X# C until <condition> loop
, ]& F6 z8 j3 X4 _ <statement sequence2>;/ a9 r4 D* Y; T. U" h! V4 q N' I$ k
end;1 a1 h/ S8 D: @9 D3 G! I: k C
(2) while <condition> loop
. O1 _. `6 [6 P, v. S% d/ t <statement sequence1>;
9 ?9 d( i3 B1 q- ~- y3 i; S( y end;
0 w9 C+ g9 T+ m2 [! d! T5 v6 a (3) repeat
4 E8 A& u5 g) }0 M6 z# p <statement sequence1>;2 j& ]4 |8 \ t) A$ f K% ^
until <condition>;0 \# b1 p4 o) z0 u9 |+ t( J: M
(4) for <condition> to <condition> loop
J1 ^7 @/ v" M: h0 Z <statement sequence1>;* d2 s% P/ o+ t- q* `! y5 K$ |) x
next;
# T3 Q3 L7 A9 D/ y1 t( ]3中断语句+ p8 E5 ?6 a0 V6 ?; Y
waituntil <condition> prio <integer expression>;
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6 z( Y# m6 \: q* a$ v以上为常用的函数！- J, K: f6 e& h) _+ N
还有很多，如有需要我把资料发到你邮箱里
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