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发表于 2012-11-13 08:48:12
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1判断语句2 _5 S. N# J- X: q: k
if <condition> then
1 y7 m4 u' L) d' E: @ <statement sequence1>;! ~) a. \2 w: l9 Y' x6 l
elseif <condition> then
- C+ P- J, A4 E7 L- [) t <statement sequence2>;4 H G5 ^: w' o, b5 z3 I) H
else 7 G4 P& S+ ?4 b3 `$ q1 U/ v' ?
<statement sequence3>;
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如果分支比较多，用：0 D; s% `, q/ b) \' z
inspect <expression>
- [8 Z6 D; Y+ i8 o when <constant_list> then4 T; N0 U: m0 p* S
<statement sequence1>;5 R+ r. P/ a! `; t/ w
when <constant_list> then' y( e; @4 I* q2 ~; l$ z& X
<statement sequence2>;0 S9 O- W3 [4 @* o+ Y F
...
* V; z& r D+ f8 R else
* v# Z1 V0 v: i% ? O6 o" U( K <statement sequence3>;$ u% c/ g# F2 e1 n4 Z
end;7 c2 {% | ?. z7 K& b( s
. c" d- D0 I1 z3 D# m" H9 ^ f6 y" J2循环语句
# z9 p! x. i* S# K5 F (1) from <statement sequence1>
' F+ n+ c. ^/ ]/ C until <condition> loop2 p1 A) @) ~0 \( A/ Q" K* A
<statement sequence2>;) `& b- W) d3 F" C7 O. y& u
end;& b' H) l1 j i Z9 \+ ]
(2) while <condition> loop
; |& d- W" `4 j! Z! Z+ M <statement sequence1>;
% Z: R; m2 u, I9 N( ~+ |) L- Q end;
5 B" ^) L0 L. n) J (3) repeat 4 Q% `' \6 O6 n) v- w
<statement sequence1>;
: h e" G! O" H# K6 l5 [9 B8 { until <condition>;
8 X, f3 C' A3 M (4) for <condition> to <condition> loop7 h5 a- D) z( w8 T% f J5 r0 T
<statement sequence1>;6 J6 }, d% V* h1 v) w( D
next;
/ ?8 O/ v& k1 g9 k; ]3中断语句- s3 ~" |) N N1 r' T5 ~% X
waituntil <condition> prio <integer expression>;$ d+ [7 U7 _& E, v1 B J" e
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以上为常用的函数！2 N k& Q. F$ @5 G: C1 d
还有很多，如有需要我把资料发到你邮箱里 0 h4 [2 D* ]. P, z
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