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发表于 2012-11-13 08:48:12
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1判断语句3 m: Y$ w2 X7 k$ E
if <condition> then& {. e3 ]6 j; ?" B. ]: c$ {
<statement sequence1>;
2 n. F' b0 M" x" }1 ]* k. n: j elseif <condition> then
, |% v8 R' q8 ?/ f <statement sequence2>;$ W) p# z2 D4 p+ P2 t
else # @5 d, o n% B+ ]/ O) j
<statement sequence3>;
& ?: p0 w7 ^. v& V end;
$ s# s, F: x4 v+ m1 J: p% Z如果分支比较多,用:
3 y! t. r8 |$ H9 H. C inspect <expression>
2 u; ^+ U( C) g3 u+ R* m/ Q when <constant_list> then
: p# v4 I* n( K1 n" n$ v! Q <statement sequence1>;
) ~1 q! }0 q$ p* j when <constant_list> then
4 U, s4 X4 C6 W% M) [, ~ <statement sequence2>;
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else
0 ^# D _* e5 h- b7 n; d: z <statement sequence3>;8 g4 P: }* ]6 \# M; {: C& Q7 s
end;
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2循环语句) E# \1 V6 A: u- s0 A
(1) from <statement sequence1>- r# p" _" s, b6 y
until <condition> loop1 W! Y% U& n& j, J2 I
<statement sequence2>;
. N- C; S9 b0 I) D. V8 l end;
4 ]6 a: J6 u, H* f1 Y (2) while <condition> loop8 |7 v0 P; w6 Y Q5 n. H& t/ ?% P
<statement sequence1>;! z9 R% U) {1 o! I$ e+ Q+ s6 i X! v
end;
+ K* Q+ S3 h" q- B) I9 y* v (3) repeat
" z4 U4 k% r4 \- L <statement sequence1>;
. \! i* D- _/ V, C' y until <condition>;& ]. n T- c! R& f7 |( L% c
(4) for <condition> to <condition> loop
$ Y- w* C9 M' L0 @% H6 X) e <statement sequence1>;
5 v* k) L! X7 Y! i0 ]" i next;* O; F; U+ f& n5 U5 q
3中断语句
1 H9 D- h1 K2 O2 c2 u waituntil <condition> prio <integer expression>;
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以上为常用的函数!
$ Q8 f1 @9 }! O, E还有很多,如有需要我把资料发到你邮箱里
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