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发表于 2012-11-13 08:48:12
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1判断语句
' m R; i3 [! o7 v6 V6 w7 v1 E, t if <condition> then
; `: ~3 @" U% S" L7 [* C" }1 Z$ O D0 u <statement sequence1>;& Z% z5 {( x; Z& o, k6 S& U/ i; q' `
elseif <condition> then+ z3 @- J* i( }5 E' f& T
<statement sequence2>;5 z6 o6 S, x2 z( d4 C; Z! w
else 0 v0 _1 E+ U! J" C
<statement sequence3>;8 A ?4 [ d3 E% G" p: |5 x' G
end;8 Z7 g J9 S* z
如果分支比较多，用：
( j2 N6 M E+ b } inspect <expression>: j7 T3 P. o, L l% n
when <constant_list> then7 Q3 \7 d0 X5 B L1 f
<statement sequence1>;
' o& p0 y4 ~: y2 X8 {% ?6 K! M when <constant_list> then
+ d/ j2 t# l4 W- P3 w <statement sequence2>;
9 y. x e# C* K& i ...
6 V. `8 t5 \9 b" |$ K) d/ V; j, V else: h5 y1 b3 B u, g' v- w' }
<statement sequence3>;
; ~# g7 M8 n7 ^5 ]9 Z+ }% N& uend;
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5 z7 E: a7 S) H, q0 ~/ t2循环语句
) F4 U$ v5 a" n4 d1 l" r7 i. y; f (1) from <statement sequence1>
8 u1 X0 `& R2 g until <condition> loop E$ f- v2 _2 b1 V: S3 w0 I# J1 `
<statement sequence2>;- b: Z5 a. q: h. D
end;
- a1 ? T% _! X8 A. Q8 X0 p( B (2) while <condition> loop
& \. U% A$ ?# c5 y! b <statement sequence1>;
) u) I* U; T; o4 J" P$ {9 E end;. d$ k7 _5 T" j* q, b- E6 S4 ]
(3) repeat # Y) i" j! Y! M# {% r
<statement sequence1>;
6 Q2 Z! @8 p; E# I1 b until <condition>;
) E1 j% t+ [, Y& Y (4) for <condition> to <condition> loop; X5 F) x+ N2 a, C
<statement sequence1>;6 L$ m5 }0 v8 |% N. ]6 Z
next;
7 ]! Q0 ^: \ }0 [# }3中断语句8 x" l3 M9 U. y2 p2 b
waituntil <condition> prio <integer expression>;
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以上为常用的函数！' r1 N+ z0 v% b0 K4 `( @
还有很多，如有需要我把资料发到你邮箱里
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