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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
2 I! k, s! y Q( S! X if <condition> then
0 j) \3 C" |0 P4 M3 O! r <statement sequence1>;
0 n& L1 s) I; j8 B elseif <condition> then |8 U, T0 A' u7 c1 E
<statement sequence2>;
" d0 h. C( E; A0 K$ ^: G3 b else
K* d* H5 f3 i) P( z <statement sequence3>;
& D, V/ B: L' m end;: S. J% A% c1 Z. \
如果分支比较多,用:6 i2 j8 q1 @" R( I5 J6 C% M$ g4 [
inspect <expression>5 e+ {$ N' M8 c% l# \
when <constant_list> then! R: e1 z( j; Q8 U; S- d7 Q
<statement sequence1>;
& _6 t' a+ V: r" T2 R when <constant_list> then
r$ i$ r. k; f# M) c <statement sequence2>;3 m- [- f& J- Q7 v2 H' J! `
...$ h8 J+ a* @$ g" r
else
# T4 `. K0 S/ `0 i A <statement sequence3>;
8 X) v" U1 A, @& \% d; uend;
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+ Q* z# T. W$ T8 h2 R% ^9 }2循环语句
, R( Q) K3 D& v (1) from <statement sequence1>5 j8 R! L! w) C, A
until <condition> loop
( i+ R# s4 r+ V5 `# S2 E8 F' ^4 H; m <statement sequence2>;$ Y" {5 n( Z, }5 e' D
end;
4 y# u5 R( y) L% P (2) while <condition> loop
: Z. W4 W9 }) ?$ d/ ~ <statement sequence1>;2 Y8 J2 k5 E( l
end;' h: B1 A& \; Y- m9 I( j {
(3) repeat
+ O( G Z+ o1 z a <statement sequence1>;1 c$ Q$ {3 H& \( }+ B7 F9 t6 ?
until <condition>;$ E* x# `" N0 x, l
(4) for <condition> to <condition> loop' A: r8 j2 ]1 p9 F, h
<statement sequence1>;. P/ R- @& r% `( {4 j+ h: R
next;. a' U! e6 a& \& o' N
3中断语句
; X, B/ d7 ?9 [4 l8 m% ~" S waituntil <condition> prio <integer expression>;* Q9 Z' ~6 T& M2 I
?( `! k2 B- u8 t. M O9 \
* z" M3 r4 C0 c& t) M' n以上为常用的函数!
0 {2 Z9 |( i1 {1 @# }还有很多,如有需要我把资料发到你邮箱里 ) J8 R' x* M0 _! ], I: D
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