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发表于 2012-11-13 08:48:12
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1判断语句
1 s" Y" B3 N; ]' g9 C% {* N if <condition> then
- S4 s9 \3 d9 q d <statement sequence1>;
9 U# p1 o- o0 O* M elseif <condition> then6 |* d; H- N( z; n- i$ S8 W, }
<statement sequence2>;$ r8 o0 z: h% p
else & P# o- X" V4 o6 _) U
<statement sequence3>;
5 T2 ~2 D4 y# Y end;
" Q. X# F$ g1 E5 r9 t1 m如果分支比较多，用：
* X% ]2 n% w& ~# u' Q6 p8 F inspect <expression>
+ i1 q' ~( i( T- G when <constant_list> then
# \1 a, i) y. z' k7 z1 x <statement sequence1>;
. ^ ?0 m4 j% l# b when <constant_list> then
- D( h# h& C/ S <statement sequence2>;
l; U$ Z& N+ Y. z ...
% b% r+ b, K# ^& p* @- D% b else
* G; l9 E, O9 w g1 x <statement sequence3>;! w7 z: P3 v6 |( d E
end;
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9 C! w( }' q; Q) B1 d" f2 a, W2循环语句
, I( \6 c- k" g2 U3 s (1) from <statement sequence1>
/ T! l# h5 k. D6 v8 O$ ~ until <condition> loop
& D6 r5 A! G+ }# X0 ~ <statement sequence2>;$ g7 j& d% U2 ~9 f" l/ |
end;' a8 \6 X& V7 ~0 \8 z8 C8 f% ?
(2) while <condition> loop: k2 y c1 u U
<statement sequence1>;
: w& o- J" h: I) \/ G end;
# x+ K5 N& S$ f0 a (3) repeat
* S' G7 x$ i/ ]) P3 }6 ?7 ~, a5 O( b <statement sequence1>;' m: c4 {$ v( S5 z" p5 N0 V p1 I) S
until <condition>;
( {: c z7 q6 ?; O' b# O (4) for <condition> to <condition> loop0 C; K7 i/ J! U* o! O$ K3 c
<statement sequence1>;- ?- J& Z/ H# y+ j# R @0 i+ H
next;
( w5 s+ t9 m# o! [5 h3中断语句6 t9 e$ W# A. M# A: }. M4 u
waituntil <condition> prio <integer expression>;- c V2 V" a4 Q2 f" K3 Y
$ ^2 o2 q, ^4 d4 P' [
$ ]1 P( i& r; _0 e
以上为常用的函数！
' B( e# M G3 g2 Z: z还有很多，如有需要我把资料发到你邮箱里
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