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发表于 2012-11-13 08:48:12
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1判断语句9 Y# A% x# y$ B4 M2 N0 C ]
if <condition> then
4 I$ N3 }# V) _; Z; y/ ?7 d2 C# \9 m <statement sequence1>;
5 d# x; q) c" w6 n0 b" }3 M2 j elseif <condition> then1 N6 L- a* P |$ w
<statement sequence2>;, p3 A0 N6 C1 A, G7 e5 f' T
else 2 l; N; ]( A6 t7 `
<statement sequence3>;/ U% j' N( a' E( o& L- C
end;
) k9 x. b& K$ d1 g F7 q2 {. D d如果分支比较多，用：
+ I$ J- `' S5 G8 G, U inspect <expression>
0 `/ s0 m0 R. s( b( D M when <constant_list> then
/ `+ I' |3 G6 ?$ D! G <statement sequence1>;: l% e' Z: k/ T4 p
when <constant_list> then
' T" ^, p, v$ O! S r) l <statement sequence2>;$ O. K4 {- r$ W/ ?/ g H3 O$ Q
...
% P- Y3 l: p0 [9 b$ W else
- ` }' M r2 @6 f <statement sequence3>;' S# i/ P8 y9 I3 s& n' F/ s
end;$ J' k" o0 ]- J: D- Q
6 R1 s" ~! ?2 L2循环语句
" `; O3 \: ]7 L' X (1) from <statement sequence1>" q1 M& V; P# p+ a+ z
until <condition> loop
2 K) F1 l$ r, O9 l <statement sequence2>;
* B: B) c3 Y- K8 A7 ~ end;
! _* A' e3 {5 a, Z (2) while <condition> loop
. p% e0 O. j, N <statement sequence1>;' r# l$ d: \3 z; _; Y5 I0 Y
end;* q5 A. T' s+ S0 E6 |
(3) repeat
6 q8 U! ^" X4 `* ^2 D3 J' N <statement sequence1>; o$ ~7 x, b& x& I, ]6 v$ _
until <condition>;
7 S1 ^7 o9 {& m4 Y/ }& M (4) for <condition> to <condition> loop3 q/ U5 q& q) ~2 H3 A( ^* Y
<statement sequence1>;2 N7 K4 A, h5 K, S4 S) {2 z4 Q
next;' l$ G0 t9 x# ?1 H8 u! d7 ~2 r
3中断语句9 ~: j3 X- E0 w/ A7 y
waituntil <condition> prio <integer expression>;( g8 H0 @" \# {# E, @" e
$ X/ O4 Q: p2 i! F: e" O5 v5 P
( Z: K W+ C+ I) }5 r
以上为常用的函数！
' y( {! |/ x# Z S3 m6 n还有很多，如有需要我把资料发到你邮箱里 - x# Y' {( W; C0 a$ L' k
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