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发表于 2012-11-13 08:48:12
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1判断语句* u' ^4 R; ], Z9 U: {. ?" S
if <condition> then
& ^/ ]' {5 ~ k# i, l <statement sequence1>;
3 {7 r" i3 w+ i6 J' i elseif <condition> then6 {0 ~3 H7 ~( X+ N" F9 g* z0 l
<statement sequence2>;" [/ @+ S$ H7 Q
else 4 Q3 ]5 h$ k& p0 S: @
<statement sequence3>;
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如果分支比较多,用:
J! ^4 [7 S! F! x; X inspect <expression>
: Y/ F1 {; a/ L5 o8 `; B- c when <constant_list> then
& @7 u& \, A7 |9 ?! ~3 B& k9 p <statement sequence1>;6 x: t/ Z& i( ^' k0 Y4 b5 ?; m, d( v5 K
when <constant_list> then
6 A; u6 o0 a3 ? <statement sequence2>;0 g4 s$ V* X# u7 N; B, y2 I
.../ @8 s! _1 Y" d
else
/ A8 E' s, a0 l4 c8 f <statement sequence3>;6 b! B8 Z5 M* a
end;3 H# D5 @# ]* i/ P: Q- }
3 |. [- ?9 j# ]1 g4 s3 A, B2循环语句
^" K7 U3 V8 b9 r1 ?- U9 B( L (1) from <statement sequence1>
" c- C) k6 }! V+ h* N until <condition> loop
2 v3 _1 P& _+ ] <statement sequence2>;. H5 p$ w% Z% s; M5 L, P( F
end;
0 T4 W" A3 |8 y# e% G (2) while <condition> loop3 E/ V, a1 v/ u$ Q# f
<statement sequence1>;6 I& H; c8 R# s9 {7 B# U( V
end;
$ o+ o$ v% W/ P (3) repeat
+ l1 f- R$ z- R <statement sequence1>;+ B, j8 g H4 h. C6 `4 _
until <condition>;/ \4 q+ F/ g% w5 q+ n$ i
(4) for <condition> to <condition> loop
' X' d4 H3 R+ O/ P& T# l <statement sequence1>;# S2 K0 l/ }! Z! M$ m
next;
) C: b( O8 d1 Q& \3 p& o. {3中断语句0 I" S. t. U+ @3 f( U& c: {5 U3 J
waituntil <condition> prio <integer expression>;% W9 O# Z( T4 K# d7 N3 x! \
% B. I% c% b; r* U: U5 x
7 u5 V8 Y0 g0 F以上为常用的函数!
3 D* v) v6 s6 _. y2 }还有很多,如有需要我把资料发到你邮箱里 ! H% V$ X$ p7 s* U& D/ G! E# c1 p
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