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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
9 \) T9 }, x) x* w1 a if <condition> then
/ F; P R% S4 O" L5 x <statement sequence1>;, U! y, i5 I# m
elseif <condition> then
% w8 X, J6 C+ m0 D0 n) A! T0 \ <statement sequence2>;; a3 j# E( d8 E& |# l$ i0 ~
else " R% b6 c( X- V$ p$ j( l# g G
<statement sequence3>;
$ a2 M) f0 M. J. w2 \9 s# T, Z end;
7 K4 p2 |, g; S7 J& F8 T S如果分支比较多,用:
: Q5 |% @8 b* ?( ^ inspect <expression>+ f& o# H" F6 F/ e$ f9 L* l ? U
when <constant_list> then
' z& o' F& m6 H8 y; W5 J <statement sequence1>;
# [+ v. p' J1 I2 q( b. D8 c when <constant_list> then
' P) m. w+ G" M7 v" ] G <statement sequence2>;; J `6 D! N! K+ C
...
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<statement sequence3>;" K" D/ q6 S4 Z0 c1 |& {
end;
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2循环语句
# S s \/ `+ z7 X& p v (1) from <statement sequence1>
$ P) j6 e0 O/ \ Q2 G8 F until <condition> loop( j9 f! O( U# g0 q U0 N$ e
<statement sequence2>;
+ a9 S, q: b0 H4 \/ I! { D* f end;
7 b5 G7 j& t" ~ (2) while <condition> loop$ G9 `( l9 G; h; W Z8 L& k
<statement sequence1>;+ l/ a1 [2 L# K4 O
end;
$ v% h9 \9 r& | W) j. o (3) repeat
* r, X7 x% j3 F8 ~ <statement sequence1>;$ [2 E# {6 G" d7 J8 _; Y0 Z2 G
until <condition>;6 u) z, l/ |5 t' B8 o
(4) for <condition> to <condition> loop
2 N( I8 @$ `0 a <statement sequence1>;9 f6 s% F. T/ J5 S: y" Y h
next;- e9 Y$ Z" Z) W" _" w
3中断语句! j( L. l& E' q2 U9 r c
waituntil <condition> prio <integer expression>;, i% q6 ^: J" J: M8 J
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以上为常用的函数!
3 \" X4 }' D5 K! d8 k& r2 |还有很多,如有需要我把资料发到你邮箱里
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