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发表于 2012-11-13 08:48:12
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1判断语句+ S6 S* q/ O1 z: x' b/ M
if <condition> then
7 {2 I0 S N* z& ^! K2 |2 e8 v <statement sequence1>;
$ X- b8 z4 P4 j, d; y elseif <condition> then
$ |, }3 u5 D1 Y0 T9 a- e <statement sequence2>;/ m% Q* w: Y! D/ ?4 [6 b; h
else
0 R8 Y5 i& U% l# X) \ <statement sequence3>;9 @( a, ?/ |5 s+ t5 M& X' w
end;
! H7 T& ?. P' n9 m如果分支比较多，用：, E1 v% f* ` S. F5 a
inspect <expression>
5 z7 Z& [$ e. ~' {/ Z% O# R6 D when <constant_list> then: @! o5 E" M# N3 q4 [' j
<statement sequence1>;! s3 R8 H! v: U7 K. E% |1 R
when <constant_list> then
( d5 h& c8 R* g3 U <statement sequence2>;
w* W/ \9 o- T9 a* u7 P ...
/ \' m$ V+ T8 e- S3 m s& \ ^ else
2 i; @2 W. i% w5 X- w) t: ]/ q1 u6 ^& a <statement sequence3>;
4 \" A) j d. u* V) t& m' kend;
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2循环语句
. e1 t' T1 ^8 ? (1) from <statement sequence1>2 F- i3 |) y2 P; z7 q6 ~ z
until <condition> loop0 t7 g0 E9 f2 a$ x% m, Q7 m3 y
<statement sequence2>;, y3 m) P' B% Q1 u; }
end;
( Z R' s# a9 v (2) while <condition> loop
3 O0 ~. \/ T0 @3 E <statement sequence1>;
' o' F) v, }: G/ X1 I end;
4 ?2 G; T) \ w" Q (3) repeat
5 p+ a1 Q" b. ^6 l <statement sequence1>;! [6 y6 F3 g' Q: A$ h# z
until <condition>;& Z- o# C/ F1 [: [/ r+ y
(4) for <condition> to <condition> loop w' e2 E# }# U9 W1 a
<statement sequence1>;' |) V) T& i* Y J, j( a, g- H7 Z0 ~
next;3 g# J9 A' [6 A2 M; Y- Y- n
3中断语句( ~: L3 Q9 h h6 P" m
waituntil <condition> prio <integer expression>;
2 U9 F9 ?- r0 o) R& c: y6 d0 \4 z! K+ {
- W# ?* S. p7 P' R4 }8 q1 `7 o9 X S以上为常用的函数！
; A$ v+ y6 ~- u! X还有很多，如有需要我把资料发到你邮箱里 Z3 @4 o" a& {' h2 a
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