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发表于 2012-11-13 08:48:12
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1判断语句
' H, z/ X; l! p n8 T3 p if <condition> then
. @3 I; E3 c& { <statement sequence1>;
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<statement sequence2>;
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<statement sequence3>;$ @7 d* q3 l$ u! E1 Y" Y, n
end;
7 U4 |& W7 w2 r o1 `* r# X如果分支比较多，用：
" k5 [8 A8 ~1 o, T. H4 ]( U5 { inspect <expression>7 R0 ~- g; s$ F. B% N
when <constant_list> then) }( c- g- D( h5 M& v
<statement sequence1>;& ], h2 m6 e7 r. I" K. Z) D$ @
when <constant_list> then- ^# s2 a+ y8 j. }$ f8 T
<statement sequence2>;
3 G# o N3 _* O5 C ...
- y f! M% I- R0 t) ]' M. y+ J else
6 U6 @& S- @( y7 h! c/ _! \ <statement sequence3>;
: N3 j) Z R7 w3 b! l8 G5 K7 Fend;, X8 j% c0 g8 Z8 ?# g
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2循环语句
# w H9 M* ? P, }: P' R3 } (1) from <statement sequence1>
: W, U% ?. F; E0 ] X* t until <condition> loop5 Y# P2 M. P) O' F* `2 D
<statement sequence2>;7 B5 Y& N1 S# ^+ @& ~1 t+ x8 E0 g
end;- @' G7 \! H7 w+ | h% l
(2) while <condition> loop
. P% m/ d6 K4 Q2 R" ~: M <statement sequence1>;, Q' ^% ^! u/ h, R
end;
* ?+ d, Z+ q/ z, ^/ H8 K (3) repeat
8 _1 D. o# @' M& H5 M. l <statement sequence1>;" Y9 a4 O) n& c" o' W! k P/ {
until <condition>;. g! i: G6 X7 c9 X
(4) for <condition> to <condition> loop$ l; l, \& }& q8 A4 t# [
<statement sequence1>;; I$ l C9 G4 l; p5 m% o! N
next;3 o2 l# d) u& \" f+ d- v( t
3中断语句
9 u' |- S9 b8 A waituntil <condition> prio <integer expression>;
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以上为常用的函数！
1 y. p6 b0 D: [6 w0 R& y* ?; W还有很多，如有需要我把资料发到你邮箱里
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