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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
% d9 i% ?' f8 X if <condition> then5 B5 C. m- C4 s4 k9 `7 J# u+ U- `# o
<statement sequence1>;
2 U' o9 D/ }5 n! C/ ^: P elseif <condition> then2 K9 e. h. ]4 n' a/ P" r- N* M
<statement sequence2>;
2 Y9 S. V2 k, @, X' H( Z else
) \ R' a( b' m# C9 Q* {- _: K <statement sequence3>;
& W S3 ?: W* O" Y end;
& u' x2 v7 ^8 R, s2 y3 A, X+ w' K3 H如果分支比较多，用：
; U6 A+ `$ j% h3 u+ A, a/ Z inspect <expression>
* ^; b4 o& y3 Y0 v2 L when <constant_list> then( S- U& [5 b# W
<statement sequence1>;
8 j- {" v/ z6 b$ e1 ?0 X when <constant_list> then0 J$ R8 I0 A6 l* o
<statement sequence2>;0 _1 f5 w9 r; V9 n; q8 j* V" e3 i7 |
...& c' L# j5 k3 D/ X: S! e
else
: y5 j& A; c) |! _ <statement sequence3>;
1 `8 U, P: P1 ~end;( S! [# x1 {, K
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2循环语句
9 _" m5 A9 ^& o6 i (1) from <statement sequence1>6 ~* [1 |6 X6 G- [6 V! @
until <condition> loop$ m; ^% S$ M) j
<statement sequence2>;2 n. f( O7 C+ N5 v
end;
0 T2 j+ H6 c8 |/ L' j* D1 c3 G (2) while <condition> loop
' q/ W O! e5 N- f <statement sequence1>;% \1 G& S9 u% p* l
end;! O! Q0 |- X- l( l, N: [
(3) repeat
" X7 H' H) B" S' D* V% m2 | <statement sequence1>;( }" b, c7 N% l6 e- K( U
until <condition>;
1 t6 i7 W# y* s$ m (4) for <condition> to <condition> loop; o1 A0 W( e3 j& J: _( K/ A
<statement sequence1>;
0 D- {: w: S8 a' W% f next;
+ o. g2 Q4 [+ s( q p" h1 N3中断语句
8 G$ B5 d) N% E- g6 u* G6 R waituntil <condition> prio <integer expression>;
: \, ~. Q, y4 m$ {; y6 s5 L) _' z# ^+ P; N" C8 f! @ o
! _- p( l" ?4 g' _! w9 l0 r' y. Z以上为常用的函数！
1 |. C4 J# H5 p' x/ V$ z! j还有很多，如有需要我把资料发到你邮箱里 ( z' c, ?$ u8 f8 Q5 i
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