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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
- s+ W& E. Y: h% O+ h ~& p$ F if <condition> then
' r7 B( b5 T3 w' c, [ <statement sequence1>;& L; O- q: ~# Q& |) D
elseif <condition> then6 O, G" p) ]* ^. \! S
<statement sequence2>;6 `) [/ a6 ?/ F8 U5 a+ N
else ! j+ ~1 }5 A' N; c. e- @* r
<statement sequence3>;/ G& X1 V2 H5 J' t$ O
end;3 ^9 Y3 W6 U$ G, D- n: T
如果分支比较多，用：
) O h' r+ c: V w m. Z% q inspect <expression>* @" X0 e% @& C4 y
when <constant_list> then
6 l; M! l. |* ?2 E4 V0 `/ u1 V <statement sequence1>;
* ~4 j# |$ N( p2 r0 t7 {3 T7 P. v when <constant_list> then' ^7 u5 i/ C6 ~4 |6 ]4 s
<statement sequence2>;
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else7 C: E' o$ T( d' X/ z8 e! C
<statement sequence3>;4 w- p0 T( h+ A- i6 h! {. H" o
end;
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9 t, p) G2 T' F9 ~, h: b2循环语句! r5 |6 z2 c8 D/ Q, H, x2 s, p
(1) from <statement sequence1>
# M: M8 T& R) u until <condition> loop
8 p- _2 G/ t3 r0 t, ]" ^; t <statement sequence2>;
8 j# N+ X/ n% p. e/ r4 c end;* s3 W0 P4 R, @8 N/ a( |
(2) while <condition> loop
' ~- e8 O6 a/ B1 x# e6 `% ~; } <statement sequence1>;
* s* d( z8 M( H& N5 ?$ j end;7 r0 l( D+ u4 ~" i+ p: J
(3) repeat
- C1 C S) G- v <statement sequence1>; l. @+ D0 l/ s6 E
until <condition>;) U$ `" i& D5 M" T7 N
(4) for <condition> to <condition> loop
6 {/ j+ s; b% L) n0 t# G) q <statement sequence1>;
, j. m" c \3 C5 w' f6 J* i next;) B# B; N+ @0 E$ B9 a. h5 k
3中断语句
# M# U! @6 s/ w waituntil <condition> prio <integer expression>;, J4 ~* s8 J; H. d
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1 z ~5 I; n" H以上为常用的函数！ P d& g F* |0 p5 {
还有很多，如有需要我把资料发到你邮箱里 6 I4 P4 S2 l' T
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