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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
/ k) u9 L$ G3 Z+ W& H if <condition> then
/ w W3 m' w, \* [% {, | _4 l- j; t <statement sequence1>;
. ]0 m. ^4 m2 x9 Z" y4 S+ s% B elseif <condition> then
# Q' S" P/ m8 ~) i; I7 } <statement sequence2>;
) o# i" ~; @" Z6 \9 `: O else 5 E1 s6 D! V, i% }) s& d1 A3 m5 b
<statement sequence3>;
r" M6 ` }; B! {6 r4 Y" R end;
" P0 t+ G3 A. D$ `如果分支比较多，用：
+ B( i/ q" g; \0 @8 `) k e inspect <expression>3 h- j* K1 }( \' w
when <constant_list> then! j. |9 h; {+ ?% c& ^
<statement sequence1>;
! R3 q( m! e) {" ?6 k when <constant_list> then
$ l& U/ N* b9 M+ v2 Q) |! w, c <statement sequence2>;
, z, ^5 x% y7 j; s! U) ` ...
- s7 Q6 i: z7 [; T8 q& X else: l0 Y$ p+ a; a5 B8 y- B! K, S
<statement sequence3>;* W& q) }# G+ w
end;. s" W3 @ s' X3 e3 b ~
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2循环语句
8 f5 c m# A$ w! a5 {/ u (1) from <statement sequence1>7 R6 Q2 \; b+ b+ t9 ~8 b T) l
until <condition> loop
. o1 y4 E" \0 H& z& c <statement sequence2>;2 r. C/ U& {4 w9 d7 S' Z3 h
end;
) P% W! |( w7 e) f (2) while <condition> loop
$ p( ?# Q* Q" h* J7 U$ ~2 K* I! g <statement sequence1>;
- L) g: C3 k0 @4 g$ W end;
5 w9 `: j# f( F, [/ Y/ N7 F (3) repeat . \& [* d; G b
<statement sequence1>;
9 | \8 K8 V _6 R( Y7 i( t until <condition>;3 z4 h' n5 g! b$ y
(4) for <condition> to <condition> loop
" d& Q% A. c. e2 W, v <statement sequence1>;
y. n5 z* S9 a& U: H# s8 E8 X& I3 M next;
/ x: p( t) t, k/ U, a1 l1 t8 y6 T3中断语句
9 X; j1 h1 f" R( S% e) ]- e$ f! Q3 ] waituntil <condition> prio <integer expression>;% m, a5 u; y' [( \0 d! V
" S+ x. V# i: J7 s. j
+ x( s. L5 r$ E8 o3 A; a* L以上为常用的函数！
& @( v, F0 }2 q$ Y" F* ?- E还有很多，如有需要我把资料发到你邮箱里 - y2 ?* I: t& ~+ Q: [9 _
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