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发表于 2012-11-13 08:48:12
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1判断语句+ s+ f' R' H) T: l
if <condition> then7 a/ u) B9 W( _8 ]4 j
<statement sequence1>;7 i" l6 S k) J2 L( p
elseif <condition> then
' U2 e q5 P1 q. N8 m' n <statement sequence2>;
" v9 `+ U* Y( [2 e0 _; v' Y else 5 g" L7 D" z; {; H* L) V# l
<statement sequence3>;$ b8 ?* _5 p" p8 G2 f* @
end;
) h, l' i5 C: o如果分支比较多,用:: V( Z$ V* l+ q8 W9 ^ V) _$ e2 p
inspect <expression>
( q; d: s* Q3 R$ Z+ [ when <constant_list> then
! V: l$ c& x9 x5 L" F3 A <statement sequence1>;
% c4 S: w5 v: {. F0 W when <constant_list> then
' S9 K: g5 r4 g2 ]4 y$ u; U' H <statement sequence2>;
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else8 x N* {/ C9 ?* e) b. D5 I
<statement sequence3>;- y% |; w2 m8 }$ ` I
end;
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2循环语句9 p' O% |4 H' @# w6 ?; B
(1) from <statement sequence1>
W/ v, q% r3 A1 A- f% I1 ~ ^ until <condition> loop l# X7 y* Q" S3 N
<statement sequence2>;
5 _7 l* G/ R# k/ \ end;
; ]! t& }# {8 c; s (2) while <condition> loop
5 t/ I0 `% `! k# t <statement sequence1>;
, {0 y) \2 B3 `. D# m end;
3 y6 ~( l3 ?! D9 v* C0 { (3) repeat
8 H1 c4 m( N$ U, A* t/ a <statement sequence1>;0 C# a' z7 b( w7 n7 K; D8 P9 g
until <condition>;* \* t/ e' y) a
(4) for <condition> to <condition> loop8 ?) v& C& @' v% H% L2 x
<statement sequence1>;0 S8 G7 @* [4 O* p
next;
w' ?7 Z" h' z3中断语句
& K- z# O3 H" }% k waituntil <condition> prio <integer expression>;
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' ^& D4 H( z" h以上为常用的函数!6 r$ n7 y5 Q2 n% ]$ w* r
还有很多,如有需要我把资料发到你邮箱里
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