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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
- s8 F* o7 h8 O4 {# I! ~0 t if <condition> then1 R" C* b2 q; u+ J: q2 C* M
<statement sequence1>;8 `# t' a a* v s/ j p+ U
elseif <condition> then
) @9 J2 v4 o- g4 y1 G' O <statement sequence2>;% Z4 t; D. A1 s! S8 s
else - u" f! ^4 L- s8 k$ q
<statement sequence3>;- k( U8 ^7 m& t( [/ ^4 E; I& p7 z
end;
) Y8 {6 ?- B8 }2 J, e如果分支比较多，用：
2 C5 M% |) x. z inspect <expression>* I, p" x0 i1 W- H' o" j3 t6 s3 h
when <constant_list> then9 f- }( ]& S( _9 [7 r
<statement sequence1>;! t1 Y, x3 a* C! O- g2 a+ e
when <constant_list> then
' u9 m. Z' Y" \8 {0 ? <statement sequence2>;
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else' i# O Q& m( w U6 y3 c. g( H
<statement sequence3>;! B, K, m' X9 A
end;9 U, Y7 _/ N' P
+ ^+ R3 K* F$ ]; g3 \2循环语句
' S# n ^( K& g; g (1) from <statement sequence1>
4 Y$ a7 X- \ b until <condition> loop1 v$ n9 F: c+ a- A* T
<statement sequence2>;4 D& F1 f G6 M% b3 v5 T+ D4 Z' k
end;9 ]+ {% @0 P% g+ M
(2) while <condition> loop1 ^, M$ Z) d3 m: H
<statement sequence1>;
4 B( k) p/ b% T end;8 d3 d" B1 R D: i# D8 r" k
(3) repeat 2 m# d; {4 w# a |8 f7 s. W
<statement sequence1>;0 q# S8 D2 e( ^- A; y+ g
until <condition>;! P, v$ D& C# Q! |$ a
(4) for <condition> to <condition> loop/ o; G' `* g* M( u
<statement sequence1>;! `1 |: j$ l" B/ P! H
next;0 C6 x1 s1 X, E& h% G
3中断语句
# t z" {' b$ T4 q waituntil <condition> prio <integer expression>;
, _% |2 |6 a2 L& y$ M0 l( ]4 c% \! G7 o( `" r
# B: ]5 ?9 O5 G+ J" M以上为常用的函数！
! S5 ~- g. N/ A: T还有很多，如有需要我把资料发到你邮箱里
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