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发表于 2012-11-13 08:48:12
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1判断语句: G: d) }, U% Q! M. c
if <condition> then
8 w1 G+ u7 S* ~8 h. G- x; I5 B <statement sequence1>;
: q) B4 T1 A' F' \% s+ J3 q1 z7 m0 T- s* D elseif <condition> then8 P* ~4 d2 `) _4 J
<statement sequence2>;, y) K3 ?# C9 F9 b& n* k; L$ x Y, |( F$ E
else + ]- T" f) ?8 w4 a# G1 G
<statement sequence3>;4 o/ g! d+ l, x
end;% S. J5 G3 d' Z) Z7 ~
如果分支比较多，用：6 ^9 ~6 @* B2 t2 d0 q
inspect <expression>
$ \4 U; W _2 f, E3 B2 x when <constant_list> then
, [& }8 L! R% C' R$ r& [+ i <statement sequence1>;3 }5 W- Q; O: E! h v
when <constant_list> then
# z# r- B2 D; M' Q" j <statement sequence2>;
) f: W, t! d3 E .... M/ x# _+ h* X3 C
else
* K: ?6 M+ k7 T: b0 e- j <statement sequence3>;
4 ?& n0 K7 x' V; r7 R4 `+ Tend;
8 R* {% }* s& n5 j: g1 c6 A- {5 P! w7 N( x
2循环语句
3 b, N* C2 ?. f( E a/ ? (1) from <statement sequence1>! }" F8 h) M9 }
until <condition> loop
, a) m3 s: C1 \; @ <statement sequence2>;; K5 K4 [; |8 S
end;
* s) o# G0 M4 k; [ (2) while <condition> loop
- d. x, C7 q; C <statement sequence1>;: w; x, z1 P3 m8 q" T) r! G9 I+ @
end;) y0 G' f4 I, p. a7 h2 I: h
(3) repeat
) F" J0 [( m9 B9 _) c <statement sequence1>;
- u1 r* D! H$ n5 R8 R' J6 H until <condition>;
0 g* }9 b! e0 o/ r4 b7 H (4) for <condition> to <condition> loop
2 }/ D% f) S7 }% r8 _ <statement sequence1>;
+ b8 u9 U3 k8 g next;
8 ] i4 Q! i0 _- A* A3中断语句
$ Q& m- [( p/ h0 L0 H1 N$ s; v waituntil <condition> prio <integer expression>;
0 ^! U- v9 B; i; E8 K! W$ U/ u# c7 x# l# f" X! e* f( t e) R
( Q' x7 c2 j( A1 p( z7 r" A" t
以上为常用的函数！0 s4 e, D" \; u! d
还有很多，如有需要我把资料发到你邮箱里 6 A; Y: H/ F- P. u
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