|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
9 H+ A' F$ j% d) _/ s9 f" R if <condition> then
5 M2 @1 ^& | ~( b3 }1 h( g <statement sequence1>;
* G' _; ~: i8 r elseif <condition> then
% X) J( o |0 F* z( Y2 y <statement sequence2>;
" R# H& R$ m4 f, H) I4 x else 2 T7 h6 a6 {, R A7 n7 _7 V0 ?; g
<statement sequence3>;1 F% Z9 k6 n" I
end;
# n9 a6 S$ {: h& v如果分支比较多,用:3 M( g! x9 J& W) G, I+ o' E* k
inspect <expression>) G' |9 Z( `2 v+ [3 x. p9 @
when <constant_list> then
5 Z. ~7 G& X' _1 {1 \8 O- U. h h <statement sequence1>;
+ _# |9 v3 R w/ P when <constant_list> then
4 J5 P' u, `2 H: z <statement sequence2>;0 E; {. R; _8 m! u
.../ c9 H1 S. o0 X5 [3 V
else
! O0 u; T$ o9 V2 v8 g& p <statement sequence3>;
1 ~4 n: J$ |3 l8 wend;
3 ~* K0 Z# ^5 Z/ ~% i% J" I& J" M1 p: E3 t" A& J6 q3 v; v f4 c
2循环语句% j9 K0 ?( k3 ^ X9 E
(1) from <statement sequence1>
% N" i: A% x1 J6 r until <condition> loop
4 v; t) T7 j, a9 }+ F! e <statement sequence2>;
( A9 t1 |* i* z( g* O, e end; J7 K! [3 u: _: a0 S! I
(2) while <condition> loop
, K, a* Y, ~; _ u <statement sequence1>;) S9 M2 C* L% i3 |
end;
- R. e& }3 ?: a7 l1 | (3) repeat & b, t$ R% `3 J" Q! o
<statement sequence1>;: o8 g6 x# N' S8 [
until <condition>;
) t' q' q5 n# }6 a$ ~ (4) for <condition> to <condition> loop7 T) ?, N8 B; i1 q. l+ s M
<statement sequence1>;9 E8 [$ y" |$ s5 M- D
next;# @! W' z4 X5 [# k
3中断语句' W9 R3 R0 g. O, \' H& y
waituntil <condition> prio <integer expression>;% |& H3 e4 e/ H6 }$ {: {- r# T* |
6 O2 ?, I; y7 c
\+ ?: G* }* i& m以上为常用的函数!
: p& E" H0 o- q6 k5 I* y# a4 l还有很多,如有需要我把资料发到你邮箱里 4 U: T' {9 W8 j6 q/ x; g
6 s2 M" X3 ]! c- p
s; _! y) X$ r- i- W% x, S4 A
) w* h$ t3 I$ M1 c9 f/ C/ s
0 c9 ~% ]0 F8 U( k8 }% H+ r8 C2 i& E, ~7 _4 `2 Q3 S
! ]8 ?/ F% v! n; h4 Q& M2 p& E2 X
7 l2 Q0 Z7 J! M) J5 {' b3 a
% A7 F; j2 }! l! s7 N7 i" {
9 {! j7 \6 E! p( U. d9 J" D+ b
% ?! a. ^- v6 N! h
|
|