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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$ p3 E9 l/ Y8 }" m3 r' D2 N4 C
if <condition> then
% r5 S [, p0 B6 c: W" _ <statement sequence1>;" y, E0 T! j, z) J3 ]" [9 e5 `
elseif <condition> then* T5 I! s4 y+ p/ U6 T) j9 y
<statement sequence2>;# p2 M- R3 S3 @3 V
else
* ?/ k0 g# c7 l8 X/ e <statement sequence3>;) ^3 N* w' ~9 a: a9 d/ ?
end;5 d$ o9 q4 u5 C& r! S0 t* A( N
如果分支比较多，用：
0 }( r' {3 `3 _" D4 D inspect <expression> i) q" ]' a; s: P6 \9 F
when <constant_list> then
/ g7 i4 w/ y. x: r <statement sequence1>;/ A7 `8 m* r- E+ U2 b: F
when <constant_list> then
) l$ G4 @/ V" k- B <statement sequence2>;. \# N1 a% F8 P0 H; g0 n9 q/ v
...
8 v; a1 k, d3 K% i: U: y else- {% K, i7 e( o- _* h
<statement sequence3>;& _' N( H3 E3 W( r# d# C
end;
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2循环语句' y; y* E$ ` j# }. D$ J0 }
(1) from <statement sequence1># e+ f! N6 Q$ n- b& t* J- C
until <condition> loop2 T0 x. r- w. O! z: s6 f+ x
<statement sequence2>;+ p4 Z9 ~5 R. F1 `
end;; P" W% ]7 g* B1 ~' H8 _+ Z( Y
(2) while <condition> loop/ m# C$ q2 Z9 _9 U5 [; {' t5 J
<statement sequence1>;
# y/ ~) H) x; s( L( e end;
( B1 c% J; \; Y (3) repeat 6 p6 q& ?; u7 A4 Y" w
<statement sequence1>;, h4 t+ I# T( w5 u7 u
until <condition>;0 N' | u/ n+ T( ^9 _2 T
(4) for <condition> to <condition> loop
, W/ f' b/ t' j- e8 C5 V <statement sequence1>;
2 S6 |2 z7 E0 H" `+ { next;
& J& Q8 }% X+ t. |4 Z B. p3中断语句
# m5 l( }: X. I waituntil <condition> prio <integer expression>;7 J1 ~* P# b, Z: P- G8 j W' m" G
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5 f" w& H, Z8 N$ n; ^; I3 }3 G以上为常用的函数！$ M/ Q5 \2 ~# Q; i6 J/ `8 @
还有很多，如有需要我把资料发到你邮箱里
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