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发表于 2012-11-13 08:48:12
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1判断语句! Y) A' o1 [' ] H* n' W
if <condition> then
) B l' y" x3 t9 l. O <statement sequence1>;
& n2 B6 e4 e0 F1 ^9 u5 ~9 y j$ |7 l elseif <condition> then I! |1 T, k- N) y
<statement sequence2>;
& O. |0 _3 m$ Q; R4 z: n else
1 s# _/ ^" P! Y Z- u+ W <statement sequence3>;" n& F6 C/ V6 u3 \2 W* ]" R
end;0 h3 Z& q8 Z7 K( e' k, r
如果分支比较多，用：
8 M% y# L3 e A0 Y1 X0 [: C0 T' g inspect <expression>
1 R* k$ V/ v! r7 L2 M4 n/ [' l, H1 P when <constant_list> then
3 W# {! v( x( s" T <statement sequence1>;* o7 h& X# \, s4 P, r
when <constant_list> then
5 k. N# ^2 N. _; {7 E+ t8 N+ k <statement sequence2>;- Z$ Q! p; N# Z, W# q j
...0 R$ `2 b) f5 Q7 F$ L3 M7 h; _
else
& Z0 h0 `0 r) { f* o <statement sequence3>;
7 q: N3 K$ f& M- h; M' e9 T) gend;" v7 P! O4 h5 N1 l* Z
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2循环语句
& k7 a- T4 u, m; P (1) from <statement sequence1>+ l# _+ n( q5 M# O7 q, f: A/ u1 Q
until <condition> loop
' P5 C7 X5 g0 ?3 B* A% e/ _* a: ` <statement sequence2>;- y( w) m( s1 v1 G# t3 ~1 N: N
end;8 @: X( S3 |2 v, c# l4 I
(2) while <condition> loop
. y* ]* |# Z* l! E! R <statement sequence1>;
# N. s% U" x1 Q m6 v( e U end;
, `: ~# E; _2 A# D. m; i9 b9 a; G (3) repeat
0 {/ D# Q @0 ?6 g <statement sequence1>;0 F4 ]8 H9 x J
until <condition>;. S; d4 h& I" f3 N% a- h( _0 ]( E
(4) for <condition> to <condition> loop0 F6 l5 ]$ W+ ^4 [9 A
<statement sequence1>;
) R' c& ]% r* z( x next;+ X' R( `7 L( |* C: f
3中断语句
$ T, l0 Y( ~1 D, Z waituntil <condition> prio <integer expression>;7 N4 i1 a) z' D9 M
& b1 X7 w/ Q5 } |( Z
6 ?' `3 j; S' F以上为常用的函数！, ?3 a; A; v B! t6 x
还有很多，如有需要我把资料发到你邮箱里
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