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发表于 2012-11-13 08:48:12
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1判断语句
& j4 h0 f% L# B! t( Z if <condition> then
' A; E7 f* m# F <statement sequence1>;
; m! j S+ N6 b& k, `9 V elseif <condition> then2 D8 {' ]5 M+ \/ o. N B( u/ c) z
<statement sequence2>;
6 U) P& L+ R2 ?6 x W ]6 V$ J else
% i) t2 t$ Y3 x9 X" _2 t" h# f: J- P <statement sequence3>;. j# u/ C1 y! P$ [# ?) u' R: \
end;' T# n; _* m$ n) E/ W' A
如果分支比较多，用：
8 T! C+ O' _1 j7 o# o+ g9 v# I7 g inspect <expression>
! v$ v7 E( R: G, e+ c when <constant_list> then
4 v% T9 w; _8 o+ J. ?9 F2 d <statement sequence1>;/ @$ Q! k1 y+ e" D, ]
when <constant_list> then% H T1 I. E8 p) Q7 V$ d; \6 E+ i
<statement sequence2>;
$ j. u6 O( N5 Q; G6 \ ...# [' Y! k( P4 K* {/ E8 t) t
else
: V4 ^7 s2 w$ B8 Q. ~, s <statement sequence3>;
. ^1 I% P0 n5 B, @% Aend;
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2循环语句
" X5 G M2 `$ C/ ^" \' P- b& x (1) from <statement sequence1>
' \$ M% l1 K9 K9 D( l6 _ until <condition> loop& M% ~4 b" _% b z
<statement sequence2>;
- y4 c4 B0 G5 z' y/ k0 c end;) v( O5 K+ M+ {6 X2 o( n: x) @1 k* ]
(2) while <condition> loop w1 p* ]) O1 p3 N
<statement sequence1>;
" j! c$ Y1 I0 {/ d8 z end;
) ] U* S- {! G# {4 C4 F (3) repeat 3 H% J& D* H2 h
<statement sequence1>;
- m! U: z$ x& n' I6 O! T3 s until <condition>;
! g' ]6 B( I$ R$ K8 A: t (4) for <condition> to <condition> loop6 o9 z5 a. Q! g
<statement sequence1>;" V j, ] L& M ]& X
next;
0 C8 }- y* @3 H$ l+ E3中断语句. [0 s. E5 G9 K l+ r: {( D: D
waituntil <condition> prio <integer expression>;
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以上为常用的函数！2 Y' l) K7 c8 ^& }( q
还有很多，如有需要我把资料发到你邮箱里 / o, W( Y/ ~2 i( n3 N" F
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