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发表于 2012-11-13 08:48:12
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1判断语句
: i; n. h R! Q# d if <condition> then
( a% D+ ^: s8 a8 o3 ~" q9 y$ J <statement sequence1>;- a/ j# A# o6 q
elseif <condition> then
* e. T. e* Z& `6 @: e5 T9 m <statement sequence2>;
3 \& y7 ?( q4 G, | else
4 N, n7 C E3 R! q1 o9 k <statement sequence3>;
# a& L: V; X. a7 j& l end;) ]- p/ s) j& ?. E& x- ?
如果分支比较多，用：$ t* z& A- [9 Z0 _" ? z, ^
inspect <expression>8 a' {; h* s% f' r) Q2 i* D* p
when <constant_list> then
4 q- U2 q; N0 D! `, C; e <statement sequence1>;+ W# t1 D3 z* @" i$ Z$ s( n3 U+ z* I
when <constant_list> then* b3 k2 \* [) n. N9 i
<statement sequence2>;
e9 }; {1 O3 R ...: J; O. d6 N9 ^
else
! I7 g! J' l {+ m2 o I7 T <statement sequence3>;
4 y: y, W _: \; F1 eend;5 U9 P: x; ]3 T( l3 Y
( B' C; J# [# ?- K: y8 |* P6 z8 J2循环语句
3 _0 u. e' H5 n; L: e0 y; { (1) from <statement sequence1>
4 y. ?- a* v, }, m( M' L" r' g until <condition> loop
: Q( Y# Z# \% [" n+ |/ t <statement sequence2>;6 o$ f$ g! _& I( e7 ?: H) j* Y
end;4 B# Y8 l( ^" N1 I0 F! S M5 j
(2) while <condition> loop
- p! [: S" }6 M+ R% z# o* M <statement sequence1>;
/ p$ `3 M, E3 O' |# ? end;0 r* @: \5 i' v, ~' }
(3) repeat
; h# G) C. S6 O0 Q: F( ], l r <statement sequence1>;
+ x8 O, ?" `+ C! w$ O3 c7 N3 S; h1 @ until <condition>;% A: X0 ~ R8 O8 y, q7 \! w4 a
(4) for <condition> to <condition> loop
s6 I$ X) y1 ~+ G, A <statement sequence1>;: f6 i7 y# C$ f: f! a. K6 v8 r8 ]
next;
' i) [; G( l( k# ~3中断语句
3 f/ Z$ H/ l/ u, k3 W waituntil <condition> prio <integer expression>;
6 J# p) D! h, y) _2 E! Q: }/ T$ Z& q! m8 w4 J& l+ a
2 s5 x- ?$ `* y% X6 A; \以上为常用的函数！
( |+ s) K: O- M$ k% Y7 h: u. @还有很多，如有需要我把资料发到你邮箱里 6 u2 l1 i: V) \% G- a/ x
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