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发表于 2012-11-13 08:48:12
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1判断语句
# T" g k9 {6 A if <condition> then
8 t: n: O& t0 B0 \7 A2 U) o <statement sequence1>;# }! ]. Q# X: L$ t
elseif <condition> then+ Y' L) O3 M+ w2 ]
<statement sequence2>;
6 R8 Y) X0 _& v' h else & G0 t6 ]. K+ i) ^8 G
<statement sequence3>;$ u* r' A2 l! R8 d) L
end;/ j% v7 d# Z2 U, @. |
如果分支比较多，用： N; S/ I8 x; m0 S3 r; E4 G% b
inspect <expression>5 y2 z- W5 g9 K0 e8 ?) l, K9 Q
when <constant_list> then
% i. |: s# N C" ? <statement sequence1>;; p) Z- I" E/ ^( w9 Z
when <constant_list> then$ B$ o* g; T3 u1 Y
<statement sequence2>;
# }1 M3 V# y! S1 W ...
0 c6 d# @2 P' B) d1 ?) }6 p else
8 C& l3 o: u, f% F <statement sequence3>;' z# f0 O; h! s6 k: `/ f
end;
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' H2 O& s; Y- B+ c& a' H7 C: E. D! S: r2循环语句1 I9 p& m: B" a! Q- R' W! ]
(1) from <statement sequence1>; R# R8 x8 p5 a* g" [5 K9 l
until <condition> loop
& h6 F' X& r/ g& A: i% s; ^8 T <statement sequence2>;
$ h" H: ], d, Q4 r6 y5 v' o: e end;
3 {& E2 x5 i& z7 Q) B' v0 Q (2) while <condition> loop
% }4 S2 e: Q9 b, r. ^ <statement sequence1>;) W4 B) g+ D6 j) N; A- G5 F( b% g
end;
. m" c6 n. P- ?/ Y, w! c g5 m (3) repeat
2 V! R2 y3 V% M6 ?, `: P <statement sequence1>;) ~% ^% Q( Q0 ?7 v Y' {3 y6 r
until <condition>;
0 K$ H- v0 o/ Q }) Q Z (4) for <condition> to <condition> loop
- y' h& `2 J9 a% Y) F+ b <statement sequence1>; x: c$ @7 R3 m' @3 c
next;% e5 C( ^1 o/ R4 Q S# y% U+ r% y' v, d
3中断语句
. E/ E2 \5 ~# _, W+ Z7 `9 L7 H waituntil <condition> prio <integer expression>;5 Q$ e( O' _( a
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5 C9 F# I1 V+ J" ]7 |. d以上为常用的函数！9 Y* G0 z7 ^, H' S8 p Z
还有很多，如有需要我把资料发到你邮箱里 . i% g/ ~' g% S2 P2 J# {
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