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发表于 2012-11-13 08:48:12
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1判断语句3 ~) A+ i9 S$ I* T! |. w2 W5 l6 w
if <condition> then
& A9 P5 O( ^# H) M" r <statement sequence1>;& m" v! z7 `) u4 W4 b
elseif <condition> then
2 S, q' E& P& y ? <statement sequence2>;
! ~2 F2 E$ o; D9 a else % Q5 e' T9 t! ~- T
<statement sequence3>;
- T4 u' ^% C; _ end;5 ?6 @7 U' }6 `0 B
如果分支比较多，用：
9 [+ V4 E; J& m inspect <expression>" H0 k4 @9 |7 \- P; _
when <constant_list> then7 p, h6 A1 q' v2 u$ m) V
<statement sequence1>;$ u. g$ P6 I& p! T/ g# E
when <constant_list> then3 A# |7 D* c3 N) m) L
<statement sequence2>;- o/ v) X+ l5 V( H( j+ b
...
( t1 o# E" y1 {) }9 {0 } else
' P& b% Z4 B- x( x <statement sequence3>;; y. i6 [6 H z' T; {2 T, ~: U/ @9 i
end;
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9 C, o! V+ a) z) G' h2循环语句
1 D+ h' r6 J% _ (1) from <statement sequence1>* p5 d# B* S1 d( _
until <condition> loop3 x1 a ^& c+ d) o
<statement sequence2>;
! x3 j3 f# m G7 x end;
8 Y& L" C. b, [& l4 K (2) while <condition> loop
5 Q: f* Z5 H; K c/ l$ E% U <statement sequence1>;
1 u1 j3 `: r/ \ end;+ R% g) z8 M; N$ r) t! l
(3) repeat ; K: b( g, I3 y! \6 p& E$ o
<statement sequence1>;- Y9 @( B7 L- v) d3 g. q1 }) o8 {
until <condition>;1 |& F: H0 Y; S4 w& m
(4) for <condition> to <condition> loop, F; A$ Y1 i: E" e
<statement sequence1>;$ c/ W) p I0 H: h6 e# e2 [
next;& ]- w( q, P; ^( u$ T% W
3中断语句- A% f Z9 C G' _" z% f, B) b. r
waituntil <condition> prio <integer expression>;. a% d4 G* P6 K" \, j$ }3 x
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3 D" L7 W- R$ x3 S6 G9 X以上为常用的函数！9 C% ?& C. N) E% N3 f7 }2 r% u
还有很多，如有需要我把资料发到你邮箱里 9 d1 w2 E7 u& o# h9 E' Y' g- S
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