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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
5 z% I6 ~0 G0 h if <condition> then
8 Q& u4 g' L& p1 K <statement sequence1>;
+ F( p2 m+ D7 l1 T( ?1 V elseif <condition> then1 D. V3 Z/ x. ~* n' Y0 K' Q1 k
<statement sequence2>;
5 o7 r$ p6 v+ L3 P! k else
) p6 _* Y4 v! E* u) a6 \ <statement sequence3>;% U0 C* A# [! m5 P. N- w6 E2 w
end;
X7 G; r' I& `1 M; e: ?如果分支比较多，用：/ m( {2 U" Y b0 M& |
inspect <expression>
, b; p/ O$ |3 r when <constant_list> then9 V% N, ]* {- }2 ^! h
<statement sequence1>;" H( `+ C" M" O; g& C5 g' S
when <constant_list> then
! C$ }: Z& Q6 i) p" b <statement sequence2>;
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else# g+ D# [3 U4 s- a
<statement sequence3>;3 x/ Z" l, \, z4 L7 ]; \
end;, {7 i9 d+ H2 y& E: W/ M0 P; L, T
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2循环语句" J7 g: C2 h# v5 N; \0 J( P9 H
(1) from <statement sequence1>
2 p& P* Y; [( E) T& l9 G q until <condition> loop
2 R$ x4 y; I* f& F/ D <statement sequence2>;' B& ^ u+ h( M0 s; `2 Q
end;
% p0 W% A. i9 s9 I s (2) while <condition> loop) D# F) T. n+ a% ]+ ^: F
<statement sequence1>;
9 b& B& t/ g4 ^- j; {8 G" w end;
$ C T$ G' i- ^ (3) repeat 8 {+ g$ [2 O. e& p7 L3 B
<statement sequence1>;8 ^# k7 l! R( h2 `$ z& D8 _) d
until <condition>;6 M2 p/ W& ]3 t# m& p
(4) for <condition> to <condition> loop
7 S5 Y) |; y7 L <statement sequence1>;
% y' ]& G0 N: Y p2 J1 R next;" W, a+ V( K1 g2 \! W
3中断语句
3 c7 [' T y$ V( f# Y% J$ l: f) k waituntil <condition> prio <integer expression>;
0 y, j( ^1 S& ]0 |" E2 m9 l' T4 y! E" i% P. Q
4 Q V0 Y; p& M, {: J. G
以上为常用的函数！
& Y; M& a+ Q) z还有很多，如有需要我把资料发到你邮箱里
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