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发表于 2012-11-13 08:48:12
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1判断语句
e+ ^* G K7 s& K if <condition> then
7 s1 I0 [ { j- } <statement sequence1>;
# Z8 o, ?& [* s% c# L. B' r elseif <condition> then8 E" y' Y1 e5 P5 P2 s- }# C
<statement sequence2>;3 y( @8 s; d( b8 W6 s
else 0 d7 |+ `' x2 w2 Y5 k( H) A
<statement sequence3>;! }* U) J) F5 d% ]# } U1 _% `* y D
end;7 ^- m8 ]# ~$ {: @3 b2 |: O. H5 x, a
如果分支比较多，用：
$ K( y) W! e/ E1 ~1 x% A* e# f inspect <expression>. A, R% F: B+ t& R
when <constant_list> then
6 F; N: G" x+ T I5 |( |5 k <statement sequence1>;
( P* O% W# k4 O( H' V9 n. S when <constant_list> then+ m( o8 U; F& Y2 L; ]( M! s" K& H
<statement sequence2>;4 f9 D1 u0 S0 V/ r9 s
...
1 C: d1 w" x/ S+ E else: H3 c" t. P, }( \
<statement sequence3>;! l) g o7 ?# V7 F, k
end;
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0 \2 b/ c/ h( e: c) f. Q2 W4 H3 B h' ]2循环语句" {/ y6 m6 S# J. {" a0 ]! {
(1) from <statement sequence1>
7 ]# [6 \! h) G- j until <condition> loop% {$ z- ]! _- [8 s% u: o
<statement sequence2>;
4 S, E* w2 U. f9 {; r9 l/ s; f end;
+ D! a; `2 D ]8 t8 O' T* o7 J (2) while <condition> loop
, S8 c/ J( A5 C& x; \! `( x6 e <statement sequence1>;
+ L. ?* F# |0 X6 _+ j4 }* Q end;
, s1 U0 I4 [% c) z# }# s2 x (3) repeat " R7 i/ H. D, D3 \$ U
<statement sequence1>; l" a, ~; U, |9 T! d
until <condition>;- y+ s: P( N' z: `; L6 t7 e
(4) for <condition> to <condition> loop
R; `8 F) D& M* { <statement sequence1>;( V3 u3 D7 H: k4 w. z9 T" m+ N2 U2 p
next;3 }6 A+ o2 ]2 q2 ]9 J; L
3中断语句
7 P; Z0 b& M7 S1 ? waituntil <condition> prio <integer expression>;1 k; B, B8 H' K
5 s7 x9 @7 e7 p/ X. F6 m0 N, y" C j+ n( r
! K t4 K( l5 I' I6 U7 z以上为常用的函数！5 ~2 [8 [9 L0 F, Q) B+ a; s
还有很多，如有需要我把资料发到你邮箱里 ( w8 m& y- U: u9 Z9 {; s( ~
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