|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
. j) [, F. L! }, }0 c if <condition> then& Y4 T2 @; Z9 {! Q
<statement sequence1>;# v# L! d2 `( j: A' W O# f) g
elseif <condition> then
) D0 q! ~9 N) s; k- ` <statement sequence2>;8 a7 E- K T7 G9 {8 q
else 5 n% ]( E8 n9 i! c1 p* V4 W2 y
<statement sequence3>;
. }+ L8 U8 W) d3 Y1 g1 E" ] end;
0 T* a( P9 l4 G- O7 k: @0 R如果分支比较多,用:
, ?- O6 G7 c# l5 J' ?# x8 ] inspect <expression>! v9 X# C: ~/ F) ^' }3 D& _
when <constant_list> then
8 Y7 g# {6 n" R: |. ]4 }. }3 O <statement sequence1>;) f& C8 P J- ~/ k1 N8 m! r( F& }
when <constant_list> then, N3 t. R4 ?( C3 L
<statement sequence2>;
2 a4 A0 O; e" C* V- z* q9 \: W ...
3 u" r) a' v. k t* h( D6 [, i else7 ~# o* r( u% I
<statement sequence3>;
9 }) Z V9 u& m- R' E4 ]+ |end;& l/ t( K. r; [$ y. i
1 ^/ g" Y" _3 ?+ c3 I" F9 |
2循环语句
2 d9 Q8 S6 M* G7 a (1) from <statement sequence1>
4 Y; Y. _* E0 F. U! s4 s until <condition> loop
; N/ @0 }9 n# ] <statement sequence2>;1 Z! b% O, P: r- x, R
end;
% I' ]0 f; J, R9 p. c (2) while <condition> loop
, X M$ W; k8 K <statement sequence1>;
* f6 U. p5 c# b* {# A8 w8 s5 y8 h end;/ E# h$ Q) J; Y) ?6 ]$ ?7 a4 Q
(3) repeat
3 g- o; z- Z# ?& G. J% k <statement sequence1>;7 t1 s/ q& I5 G7 m/ H
until <condition>;6 R+ G- }* r1 V- \) c" l
(4) for <condition> to <condition> loop* m4 W0 [! T6 h% S& q
<statement sequence1>;
7 `$ I! d+ m9 i2 p/ y next;
9 u, a/ J- x& L0 ?! q3 ]3中断语句* _ q) s& F4 e1 ?( `7 X
waituntil <condition> prio <integer expression>;, L& {0 _- c5 }" T3 P
& |: G, U( H: _3 [: [
: K8 a/ v2 W4 E1 `9 X
以上为常用的函数!* @1 e E4 L) K: T% S9 R: o
还有很多,如有需要我把资料发到你邮箱里
` ^9 T4 Q, o' A8 a2 i! M: I H- T' ]! `, A) @
" x9 h* J+ @7 Y3 O, k: b0 l
+ v: c4 j$ }! M! N1 W1 D- y7 E2 O 9 i' }6 b( O: @8 q+ ^/ |# y
" Z& K/ ]7 K# H) C7 {# ^% {
" {0 {- Y) }0 w5 V
% }$ B' X! b f+ F* J- w
: T# m# F. x1 N, S4 H
8 k9 N6 U O2 G; v 0 P" I, U1 @! V s( }
|
|