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发表于 2012-11-13 08:48:12
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1判断语句
; }4 Z+ L1 z6 F4 ^. p% [ if <condition> then% I* |' F) K* |! O+ b
<statement sequence1>;2 @' i! |" _3 ]. _4 R
elseif <condition> then( R4 E Q7 @! f# I: u3 c
<statement sequence2>;# \% W0 P0 T( {( S3 w2 _7 r; i
else
5 x. i @2 K4 I! c; x <statement sequence3>;, N! Q0 A+ }8 u" g
end;3 r6 ?# s' u% _" t5 ]
如果分支比较多，用：3 Z7 v% N. f5 s0 l8 @
inspect <expression>
* |! o ]: G* D8 S- }: |) F! { when <constant_list> then2 v& l1 }& s0 U; ]0 e* X: Z
<statement sequence1>;- `; z3 G W: R) \1 m( W# S- {
when <constant_list> then) R0 }8 O0 l& O: [- |; P; @" o
<statement sequence2>;1 i# S) v2 |( }( h- F+ Y
...7 a6 B# }3 @7 v# p: }- s. ~
else' A! N. q+ o6 d: e3 @" w9 |& d& Q
<statement sequence3>;
% W8 J1 Q$ r% Y+ P; \end;" \- X- e4 O* w$ V: ^2 C6 {
0 b8 |( }; `9 R5 m1 r2循环语句
% ]+ V$ A) H' d8 [) n6 Y& r+ b (1) from <statement sequence1>
) s$ }; t0 s" t; E until <condition> loop
! Y" q' Z6 J; ~# C3 ?" N <statement sequence2>;8 a, H2 i1 u5 Q% _: S/ y
end;" y9 |7 |2 a1 ~8 I
(2) while <condition> loop- Y4 L. @! I1 o
<statement sequence1>;) V$ [& G: ?* ?) N6 i$ i/ @
end;
" ?: _" K$ a8 g) r; h, U( O (3) repeat , |$ Q) }# x8 Y
<statement sequence1>;1 S% {) h0 j, }, ?
until <condition>;; p0 v; t, V& v, J P
(4) for <condition> to <condition> loop
) ]8 p5 x8 V1 a0 [9 B <statement sequence1>;: F) K# V$ k4 i% U( d6 z/ h: C0 d, u8 {
next;
& h' E. q; c4 I$ c3中断语句
" b8 T4 ?! Q' x% F9 S6 c# e waituntil <condition> prio <integer expression>;6 P% i+ W$ y$ ?6 f' b
8 z2 U# G" k3 k! v/ N
! X7 E- m, S- V% A. A7 N以上为常用的函数！
$ o3 N; d: ~/ B' ~/ s& ?* @6 j; m还有很多，如有需要我把资料发到你邮箱里 ' N# M$ T7 n, d" O
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