|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
. Z9 G. i$ K) Q+ t- U if <condition> then
d+ X1 b/ \& S% d3 x" h <statement sequence1>;
2 F& r9 m2 l, Z, s elseif <condition> then
0 U9 ^- C& H L <statement sequence2>;* U8 J- c+ P8 S$ l" m. v# _. R0 q& R
else
" M# v! D1 J2 a | <statement sequence3>;
! L; Q/ ]3 ]+ K, o end;
* k2 ]. A7 K; H* \' u# U" h9 Y如果分支比较多，用： e! T7 U# R7 \; n' f v
inspect <expression>
% t6 @2 @4 O( `+ V* x when <constant_list> then
& A. \2 i) e+ B2 W$ Q8 v# P <statement sequence1>;
) T8 l0 }6 o/ f' K$ i) R when <constant_list> then
2 S3 S5 p+ X, p1 l+ C- c0 g <statement sequence2>;
" R! k6 u4 o( e- J1 S, F" K* i ...0 G+ a% A, h2 n4 Q( j8 Y) W
else, z( t; w* o' s5 W4 i
<statement sequence3>;! N6 ]* v6 a7 ?; W
end;
t6 e+ p" n2 W; \9 Z9 H% @# N6 M6 k
2循环语句; _1 @* c8 H, B+ ^$ k- e0 ?5 M
(1) from <statement sequence1>8 h, _7 ?0 o, ?2 j! w: ?' X
until <condition> loop8 F- Q5 i4 W3 R( L; ^ i( R6 F- z6 o
<statement sequence2>;
9 `7 J. I, }8 q1 c end;# W+ P% b. V+ N' N. O2 K. C) G
(2) while <condition> loop
% c1 [0 C! X2 n9 _2 G- @" q <statement sequence1>;7 }! Q( O( e4 M; h) c* a
end;
1 m O/ C5 t& I7 ?2 ? (3) repeat # e# m7 b6 ?. _2 ^
<statement sequence1>;0 | W/ E$ v1 ~6 H) p0 }; { K
until <condition>;) a( q9 o2 k- a* k. g* r; A6 D! L
(4) for <condition> to <condition> loop
: F$ A/ c: [! l9 W# s( J <statement sequence1>;
, e# J. T- n( B- H1 Y next;5 T C& D- F" |& g. z$ ~" u
3中断语句" L. O9 R3 ~# T% Z; g& u
waituntil <condition> prio <integer expression>;% a, H7 A+ z/ l( k* d) j& s) L
+ `# p" D& R( L3 J5 y2 G: L( H& v& ~% Z
以上为常用的函数！
! ~- R9 Y& Y" O5 p( v还有很多，如有需要我把资料发到你邮箱里 $ M8 d# L# U9 h
; C9 |" d. t+ T% G7 H$ U9 G/ q
) Q+ g1 G8 m! K+ p
5 r+ h. p) [& ?6 s" |5 L
+ I" m" ^& O+ I- [( U% X: O- `5 C9 O: i
/ B6 w& X. W7 o
& @# D" Z$ \+ {9 l g7 ?' K$ I# M) e ~2 } m9 o7 A
4 D% Y K0 K3 e# y! h7 W 0 J* Z, @4 N' G& E$ ~5 Q# `0 u
|
|
[复制链接]
