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发表于 2012-11-13 08:48:12
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1判断语句8 b+ }2 H& | P
if <condition> then
' G2 s& I* ?' N u+ m: ? <statement sequence1>;" ?: p% k9 U _; S9 u
elseif <condition> then# D$ e! m0 h* l6 J+ v/ b/ w# [! k4 ^$ a: i
<statement sequence2>;9 w% R# M! o- v. H
else 2 ]* l9 S" g3 j" k% g; F0 b4 E
<statement sequence3>;
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如果分支比较多，用：
. E! P$ g; C. o7 p2 |8 w' o6 r% U$ g inspect <expression>
2 `& r1 e4 i8 R/ a, m) M- T when <constant_list> then
# P. ~. I3 G: M) N! ]; ~& J. X( B <statement sequence1>;5 t/ d. N+ ?( t2 B; x
when <constant_list> then
$ n# ~8 U2 a1 r <statement sequence2>;
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else2 U6 w8 l& l: A6 M/ N1 Z
<statement sequence3>;
% a8 t: I2 b8 i) K9 b3 q9 Z7 ?8 Yend;
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! `3 B5 c3 @% `$ J2循环语句6 X6 \% i& k" d7 x% A- f- O3 J i
(1) from <statement sequence1>( x& m& I6 R( J; G
until <condition> loop' r( B$ `( K& V4 ]9 C
<statement sequence2>;1 f1 y, E, G5 M8 b9 Z
end;
8 c8 v) x/ F& h+ R% K1 Z& z (2) while <condition> loop* I3 u- ^2 ]4 K# T1 P
<statement sequence1>;& Y$ d- M/ b8 W# N
end;7 K. \4 O" u3 d6 j; _- S: }' c
(3) repeat
+ ~5 ?. ^5 Z1 L) z% |7 D, N4 T) S <statement sequence1>;" G7 m/ J6 p) m4 u
until <condition>;' M6 W. X" l1 n' |5 k, x8 k# M; [" |
(4) for <condition> to <condition> loop
9 j( c& _! x% T <statement sequence1>;
! j+ L/ E" t! W% m. I) t next;; _/ {! e& q M1 E! _
3中断语句( j. X2 {; u( I
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
5 U2 j3 h) _( ~/ u8 s% W还有很多，如有需要我把资料发到你邮箱里 & `- M" S; D1 K, Y7 D
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