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发表于 2012-11-13 08:48:12
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1判断语句5 N# @ m! M. h6 I$ ]) ]
if <condition> then
. a+ ?0 E/ o W1 j& k <statement sequence1>;
5 q. G1 g0 {2 J. r/ t" q elseif <condition> then
% ^, ^5 Z9 x1 h7 k+ b! U( o <statement sequence2>;
( `% ~& v0 f d4 g6 _5 o else
4 Z. f- o& o* v/ y, `: a% L9 S <statement sequence3>;" x7 u; W& R& q+ B5 Q0 ~
end;
4 Q P" q, `- z4 l2 s, d. K o9 I# D如果分支比较多，用：2 L2 i* L. B# w0 E1 r4 f5 [8 |) R
inspect <expression>
4 T2 _' r* v4 ?) C/ T when <constant_list> then! s: O; Q1 ~9 |8 C
<statement sequence1>;
! B! N, {, ]1 z. I {; Y when <constant_list> then
4 O$ L' D6 z$ [# n( E; O <statement sequence2>;% K) R; E/ V" ~. K' z& \
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else
+ W% k7 a% L1 a% g <statement sequence3>;. F8 x% @* G1 o% H0 Z8 {- E
end;
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0 A5 B# q- j4 v2循环语句
& _0 |! s( ^3 {4 x7 S% W( g (1) from <statement sequence1>$ c/ a# I0 n d
until <condition> loop
1 V9 ~9 ^$ w. O4 W* N* W6 I <statement sequence2>;
$ Z9 |& G8 [# _4 }. K5 V' k. d end;7 l. o. b, [. M: e2 P
(2) while <condition> loop v. v$ r6 U: R: k+ w
<statement sequence1>;
2 V ]1 F' G$ a6 o0 h1 H end;
8 C9 O3 v2 _6 y, |- s (3) repeat
% n) A- ~, q5 k! z, s; U3 V9 m <statement sequence1>;0 e, {9 e$ l1 {! m
until <condition>;, C+ k; w' G4 g: q
(4) for <condition> to <condition> loop( c. A8 l2 E r1 k v# Z
<statement sequence1>;
& s7 h0 D4 O5 N$ p& b5 X next;
- j2 e6 ~5 _* o8 c' }3中断语句
]2 ]6 T) f' w6 N5 o waituntil <condition> prio <integer expression>;
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以上为常用的函数！9 m5 z- q7 J! ]) t" d; M* ]
还有很多，如有需要我把资料发到你邮箱里
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