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发表于 2012-11-13 08:48:12
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1判断语句6 ^! c- a& I) r
if <condition> then
: G/ n9 t! _2 o: ~* [0 ^! H" l <statement sequence1>;5 k" z" H) j0 D
elseif <condition> then
2 X! n( K- `+ F) r <statement sequence2>;
1 F. _ A7 W0 }' m: B& ^$ B5 U else ) m( o \1 Q# V1 j2 r
<statement sequence3>;
$ F0 q& W1 P. }+ w2 c! J end;
" _7 o: i" e! @. i- C如果分支比较多，用：
& p' _+ x! n) \7 z inspect <expression>4 G) h4 _, Y/ v
when <constant_list> then4 a J+ O+ y% a/ i2 J* }; ?
<statement sequence1>;
8 w+ z4 |0 F+ A7 p9 H9 ^ when <constant_list> then
4 J& F: n! W0 x8 I' |1 G8 C! S <statement sequence2>;8 _* d/ j' P; j0 x3 W) S. }; m
...
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<statement sequence3>;
5 a. O2 K! H; D' n; m, Y/ Eend;3 }( r3 I' J5 D3 W6 c
$ S) B4 U4 b$ D5 s' I2 h2循环语句
& n# o' O' ]3 t9 F. _9 b- s5 `' o (1) from <statement sequence1>3 p" ~2 a3 r2 g
until <condition> loop$ @9 H; U- Q4 r, @3 n# x+ t0 W) E
<statement sequence2>;: p; Z5 Q( e* A4 U r
end;7 ?' }+ c; v. {3 Q9 x
(2) while <condition> loop& K5 }9 C8 j h/ N. \% W
<statement sequence1>;
( {" j [* r+ ?$ F/ o! e end;
$ ?" ?$ Q7 w) j# [: d5 f (3) repeat
+ u6 m3 O4 I; B' o$ ^3 O; ]$ d <statement sequence1>;
4 C- c0 S' L" [1 G! v, U until <condition>;
5 e1 f! W' H4 v8 P7 H/ ~ (4) for <condition> to <condition> loop
) I$ ?4 N" K7 o7 b- J) C5 @ <statement sequence1>; e7 V6 S$ X5 z8 n' z1 P
next;
: q+ L' _: M& S, E7 F9 h( J3中断语句
. x! S6 l5 ^4 G8 e3 a) B) u waituntil <condition> prio <integer expression>;
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以上为常用的函数！4 |3 ]! Y! ?0 C1 B; b
还有很多，如有需要我把资料发到你邮箱里 3 G2 F5 Q f2 R4 M: Z$ I. a1 w2 P$ G
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