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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
) `( d3 o3 w) {& f# p$ o if <condition> then3 p$ `! ?6 f+ {) {1 _4 A
<statement sequence1>;- ]6 T5 t3 f4 j) L6 R# e8 {
elseif <condition> then
8 `/ N L3 h! l* i. v <statement sequence2>;
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<statement sequence3>;
& M' d5 x7 w9 o9 r end;
0 }" v" ?1 {4 G0 A* R1 {) t如果分支比较多,用:
7 a/ B7 T8 a( i" ] inspect <expression>
/ T) \% n1 ~7 B! ?" ~ when <constant_list> then8 B7 C$ ~% f3 q3 J1 F0 q
<statement sequence1>;2 {4 _1 h: ?/ _! Q# B$ p
when <constant_list> then6 ?5 A% Q1 H/ u& R% |% @
<statement sequence2>;
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else
% }2 x, F0 e7 E# O3 m( K( Z( } <statement sequence3>;& N$ g2 p7 I3 `3 X/ _6 A8 ? G
end;
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2循环语句
" p+ z+ Y: i7 T" A3 w (1) from <statement sequence1>
/ E5 k4 w% w- U' k, ^ until <condition> loop$ S2 V3 ]. {/ E( ?: g. Y2 D) j, S
<statement sequence2>;3 q3 B+ C! A( T3 z4 U( t
end;3 Q2 p) U* j+ ~" Y" b; Q6 j
(2) while <condition> loop
- z; |/ L6 c3 D% m3 `' \ <statement sequence1>;/ l. G, h* G! `" F& x
end;
2 y x9 w( K3 E5 i: {( t6 R2 m (3) repeat
' @2 P. O9 c4 a! h4 V/ L3 z <statement sequence1>;( w3 y! y1 o: w/ X
until <condition>;
7 Z& }9 G, a) \ (4) for <condition> to <condition> loop" i, W& ^9 V% L
<statement sequence1>;
( J( e# w4 d+ D1 C next;. {- v5 R( z' x3 m- T/ d( u
3中断语句
- a; v1 |! ^5 q" X2 n waituntil <condition> prio <integer expression>;0 U, E8 K1 z, V% R8 d+ o
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以上为常用的函数!
& ?( ` }9 y r+ A# \还有很多,如有需要我把资料发到你邮箱里
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