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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
0 A& Q9 O; N. N; T5 m7 M- T% y- O if <condition> then- J9 M& r, K7 {. M9 t- g
<statement sequence1>;5 A4 j, {3 G4 q q% ^
elseif <condition> then
0 l4 z. m) ~0 l: ^! G8 z7 W <statement sequence2>;4 b& ]# a1 D" F, G# _
else
I( d) _' j9 M7 H <statement sequence3>;
2 i b b* F* P& | end;- Z+ _* e5 H3 I2 @3 T: x& ?& O8 h
如果分支比较多，用：+ L. ]: q% a2 F: U# c; w1 `4 _6 |
inspect <expression>
}9 ] z6 P( k8 N when <constant_list> then
, c( ^* ?5 L3 d+ t <statement sequence1>;
1 O" {) d+ v! x! ^( w5 Z2 b when <constant_list> then: z1 t' s4 F$ k* v2 x
<statement sequence2>;
5 w4 Z" L2 [/ ?, R% E) @' A ...
9 g, E, B; a6 N1 [0 \% B6 ^ else
) x7 g) v5 V# P3 g8 v) g <statement sequence3>;; r) Z+ C% z4 w
end;+ }# A9 L' `* J2 @5 e
o+ ^' c: z3 O, d& c- ?
2循环语句2 j' g8 J- g8 {- F& {
(1) from <statement sequence1>9 v" E' u( P5 j) Z$ J) m7 V$ x
until <condition> loop' K( q' L) V: R1 i' ?: n
<statement sequence2>;
$ [) Z6 m6 `' F! `& C A- j end;
3 s' d) }0 m+ A' { (2) while <condition> loop
! g$ E6 ?2 r7 t <statement sequence1>;
! c; Z. L7 P! j1 B end;
7 A4 j' ^8 _& s- R! d( J o (3) repeat
5 {8 f* E4 z: Q <statement sequence1>;5 u# j5 L/ G0 K3 D5 D% j
until <condition>;. K% R* w& X/ t9 L, L) C
(4) for <condition> to <condition> loop
. U- [- N3 v: W# V4 P" O" ^. {8 q <statement sequence1>;" D j2 e% w$ l9 P: ^$ n
next;; {) H2 S' P7 z8 ^* C; L
3中断语句
! y4 ^3 X! _; ^9 O waituntil <condition> prio <integer expression>;0 ]. A" d2 E' u
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以上为常用的函数！
" e5 S( k8 M2 N4 z- Y3 T5 _还有很多，如有需要我把资料发到你邮箱里
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