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发表于 2012-11-13 08:48:12
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1判断语句! P3 ?- D9 x/ }: H4 s
if <condition> then
7 Q% g& e" M, i8 v \ <statement sequence1>;* T9 O5 W% f0 e- E/ k- B2 W2 D
elseif <condition> then
. x# S5 x @$ C, j; M <statement sequence2>;- T+ b/ _3 ~1 \
else 8 P3 l6 f" s: H, M
<statement sequence3>;6 ?2 m% Z1 P! O" Y9 R9 N0 y, f* e# x
end;
4 O4 G) v' }' a! u如果分支比较多，用：9 a% ? g* @( c5 u8 O
inspect <expression>
1 R' I8 m f$ e when <constant_list> then
+ |) V: E" C) H4 V% }4 D' T# N <statement sequence1>;' D7 h, p8 B6 g7 T U$ _
when <constant_list> then$ Z, \ y8 E1 B* s! N' E
<statement sequence2>;' t# y0 D. m k X0 ^0 H1 m
...
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<statement sequence3>;/ L; @, }5 V- ~' y8 F3 C* Q3 y
end;# y1 }" M* q! y' y$ h) f. a
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2循环语句: D0 r+ e$ Z: o5 e$ r
(1) from <statement sequence1>
6 N8 J M: l N. I N. l until <condition> loop
/ O* m" a* N4 d2 | <statement sequence2>;
0 Y5 f0 M. B2 r end;% j) T6 y) M; _, Q
(2) while <condition> loop
! P$ X7 ~" m) B+ Z" w <statement sequence1>;4 a7 |! ], E6 t" N7 c9 e, R
end;6 v( X/ k) o( }6 R! R- l2 B
(3) repeat
4 k* r' O% V+ s! e" f6 V <statement sequence1>;
7 h2 M2 w" v% q until <condition>;
, L5 ^# r, Y. a' l3 y4 Y7 i (4) for <condition> to <condition> loop! n; r0 \; o' @3 {
<statement sequence1>;
' [2 w' o2 s' m e) i next;
) ^$ S) h) \7 B& [3 o* P3中断语句; F1 U! u; s4 Z5 P" V
waituntil <condition> prio <integer expression>;
b& ?: }/ V K
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以上为常用的函数！
) L& S, s4 T( D1 G. r. ?# Q8 N还有很多，如有需要我把资料发到你邮箱里
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