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发表于 2012-11-13 08:48:12
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1判断语句& ^: |# x( F0 C1 D
if <condition> then6 ]# u( l5 Q' M! a
<statement sequence1>;2 O5 S% f5 w% _- d! H
elseif <condition> then, d# M9 I R5 g2 M
<statement sequence2>;
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<statement sequence3>;
( r( H3 G( e, P# r3 e0 }4 j end;
" D5 m- }9 h3 O+ _6 W如果分支比较多,用:
0 l; P) y0 \4 L5 F; p4 b2 I8 Z& e6 F inspect <expression>
6 p7 l. ]( Y, V5 y when <constant_list> then' L- v4 P$ P+ s1 B6 d% V% }! Y
<statement sequence1>;2 \9 l# z* e% ?; e- q
when <constant_list> then+ E! u( k0 d' z$ _3 q
<statement sequence2>;
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<statement sequence3>;
. W( Q+ d- c% e* f" Y/ w( iend;
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* r# W. r W3 k' J3 w+ v2循环语句) P+ [% l2 u% @( ?) Z% D
(1) from <statement sequence1>
. D& x2 o+ ?/ _ _ until <condition> loop9 f& }; e. W3 f. d6 U2 Z
<statement sequence2>;! T$ R u# c1 T) i4 B4 Z
end;
& Z) J% }9 l% _0 h$ z (2) while <condition> loop
L+ U1 q; R) m <statement sequence1>;" [$ A% b, t- p) z, n
end;
9 W0 b( e9 b$ j8 ^; I- i (3) repeat 3 F3 g" E/ V! f# n- G7 \
<statement sequence1>;
' B% B% j" [6 ^: O( \$ ^0 r until <condition>;
: @" f! R/ G, g$ z& z0 c j, ] (4) for <condition> to <condition> loop
, y" J6 I- a# `* c <statement sequence1>;
o% I3 L+ j1 f next;) Y5 h4 l; S: u" Q! o
3中断语句9 F3 ?7 c2 u" ]& Q% l" E, {, {
waituntil <condition> prio <integer expression>;. X" Q# q: Z: G5 O
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以上为常用的函数!& X# p' U; B% ]! N0 \% D
还有很多,如有需要我把资料发到你邮箱里 # [3 {+ w$ \, y4 }/ Q. e$ `: f
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