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发表于 2012-11-13 08:48:12
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1判断语句9 `0 q: E! c( F
if <condition> then9 o: y9 }* \9 p
<statement sequence1>;
# B' M% F# q$ |# C6 A' d5 ~ B7 } elseif <condition> then5 y# V3 \9 ~9 r: {1 G+ C3 X" Y: |
<statement sequence2>;
( z, z$ @, T; B1 k+ ^, b- H else ( A1 Q& [: v9 Z
<statement sequence3>;
0 a4 J3 L1 `# X1 _9 H G8 D end;
* w$ h; D3 g; s# h& |, C4 n) v5 g% x8 r- E如果分支比较多,用:4 @8 f; s: m$ q/ r" ]
inspect <expression>7 k$ u& g- F1 z
when <constant_list> then% \5 D6 H/ d$ t7 u6 I/ V
<statement sequence1>;
' k1 a! T/ W7 N6 o" H when <constant_list> then" b! _" n- I6 k& O2 t0 Y
<statement sequence2>;
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else) w) Y& U3 `% z3 f# v* Z1 v/ h
<statement sequence3>;; k& B4 C; p7 P# i& a# `/ e
end;+ v" O7 b, d2 ?- |( c: x
* e8 b1 _$ \& r* z( K( D$ ]$ H2循环语句1 c. W% F7 T, ^1 r6 ? l& Y
(1) from <statement sequence1>5 r" n& s6 c2 G
until <condition> loop
' v# F" Q1 j3 r <statement sequence2>;
* c9 Z! E( ^0 { g* I1 m# }$ g end;( R4 C+ b! w6 U& d' f( s! ^ L
(2) while <condition> loop( x1 M6 C0 p) e
<statement sequence1>;
0 J8 D% S# ]7 ^ end;' X7 {( ?0 f) L- v1 ?0 v7 a/ i
(3) repeat
- J, I4 f/ C# N# C3 B! a. C <statement sequence1>;( F. E+ w" |7 w9 x- t; R- g
until <condition>;
# B3 m4 ^3 _ Q! H% _: f9 N, D (4) for <condition> to <condition> loop2 a1 E8 L8 Q: [/ C. v
<statement sequence1>;
* _& S3 \, s: Q1 Q5 r next;
1 Z% c( b4 f( w" B# e3中断语句5 T& E! n1 B3 L; g
waituntil <condition> prio <integer expression>;4 }( O, \3 |, H- I' E+ X
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以上为常用的函数!
, |1 U6 j. j, U/ a, c! H- M还有很多,如有需要我把资料发到你邮箱里 . l. w0 m7 t7 ?9 y; ]. I* i- I" r
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