|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
1 j( @/ Z+ a% A1 a% Z' q0 C' m if <condition> then
! A9 Y: p: j3 d0 X: i6 x <statement sequence1>;
6 J4 P, B" Y3 r9 e$ G9 Y9 }; b elseif <condition> then+ m( u! H( Q1 f. b
<statement sequence2>;
6 V0 j; R5 f* |# z) _ else
- ~% {- H ]" L. q3 X <statement sequence3>;
, L, E6 `9 B9 ~& x end;
- T% }/ s. K) e% N0 F如果分支比较多，用：
2 {. v0 h! Z: _# W inspect <expression>
% I! ^. l5 y: Q2 I4 _ when <constant_list> then8 F, D4 G D/ |" l" d+ p" V4 R. ~ X
<statement sequence1>;
. Q3 ~; H- Z: o" e: C. Z; X- U when <constant_list> then
6 d* V7 R2 Y! V <statement sequence2>;. q4 b' @$ p- R: h& ]; X
...$ ~) `0 D8 c$ k- h& b0 z6 U$ D
else4 P: H( w; q( X; t
<statement sequence3>;; Z& a% o2 p+ k0 S' R+ h! H
end;# k+ L' d' n1 h$ E U; v8 F0 B) ^
) D0 e/ T3 J5 n) U7 x2循环语句 Q7 ?- s9 M- P( u- c
(1) from <statement sequence1>4 m+ n) I/ q2 g2 y. T( Y
until <condition> loop! q) y5 u+ t3 f( V
<statement sequence2>;; S2 ]0 U! R1 W7 G+ E/ V& n0 E' z
end;
' ]; y) y2 }. ?! J% H (2) while <condition> loop
* p" q+ V- L7 o! p: l <statement sequence1>;/ L/ w j* Q6 V; k H- E
end;
$ }- _! |2 g, ]3 j [: ` (3) repeat
4 i6 o8 g& h+ \) m+ }2 [2 B <statement sequence1>;
9 p+ q: W1 m3 l1 O: V U9 Z) z! K until <condition>;; ~# O& z% @* L' }/ g9 C
(4) for <condition> to <condition> loop
5 U) s+ \0 g5 } <statement sequence1>;8 i7 I* T+ f, _( _5 F8 @
next;' |. g; `2 N. u; t! g# D
3中断语句
2 f- b$ G- {" K7 o+ u waituntil <condition> prio <integer expression>;
) g' E7 F" ~7 a) \$ j# v W) R
$ v1 M0 a1 D) d6 Y: X* v: T5 Q: S
以上为常用的函数！
4 a6 [: X& W6 c7 H3 D3 G) o5 O, B' i还有很多，如有需要我把资料发到你邮箱里 , D* W0 q& ^; f5 H" s
( k) n4 t9 E3 S7 U3 b1 u- ^7 F; I" ?/ i+ G- W" g
g; I& I3 R8 A1 X+ B- L
- g% O: @5 O9 B1 e
. N: @2 |' b) f; x' n( s% s6 d! W$ W: ^3 H6 o& ~+ M. }
, v; w' m; A* q; P. C6 R4 a$ x& y }
- m3 m0 C$ S% f- m7 r2 s" j
- r0 l* C+ Q" a" N1 I% `4 j4 J
/ k0 J) T: m" z; H6 |; J7 O) r
|
|
[复制链接]
