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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 G6 j+ Q) W! f5 p. I
if <condition> then! s, d3 }( T1 z' a+ [! l q4 W
<statement sequence1>;7 r' g2 [, @9 q4 A* U3 ~
elseif <condition> then$ A5 ^7 Q' w. ^: R; z7 i
<statement sequence2>;* K- b" G# E8 u' m: m4 z) _/ F
else
8 U. }1 d7 j9 E9 Q/ u8 h8 ] <statement sequence3>;
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如果分支比较多,用:4 Y$ D+ r3 S. ~$ z
inspect <expression>) V$ f: M6 R3 {7 Z
when <constant_list> then! |2 {# M# o0 F4 B
<statement sequence1>;
* e/ n, O& t2 y/ I when <constant_list> then
2 D) A" H Q( W: O. P <statement sequence2>;
$ \4 ]& G& ^. P; F0 P .... t+ s" Y, b. G2 ]
else
3 [( t/ Z; _2 n8 i3 W$ s9 ~ <statement sequence3>;
! F9 F8 y. ?+ c1 U" `2 jend;7 w$ |/ F' F' w5 u) b" s0 E7 m
# a% r7 u+ @& f2 l4 k
2循环语句& O# j( \5 m+ J5 f% G
(1) from <statement sequence1>: e* X4 k* k+ h
until <condition> loop' Y1 x9 |& u1 l, b
<statement sequence2>;( w) W3 h' Q( W u; E
end;
7 H* ~" |" p Z/ l& K (2) while <condition> loop
1 s! c! y% X; k/ s I8 B5 f <statement sequence1>;
3 M% T& t) u' e6 D6 A- E. X end;
" q: [$ z! W8 F' j& n6 | (3) repeat
* e: Q) l) {0 ^2 g; {- f <statement sequence1>;# P8 Z% G$ N$ I _3 x
until <condition>;9 n, G$ u: i2 t
(4) for <condition> to <condition> loop
( U3 ] D/ q' }3 s' a <statement sequence1>;' b# G. p. N. E. l& U8 D/ D
next;
, |$ T+ B" @. B9 q0 r0 V/ q5 U3中断语句& N/ L$ P; C9 D- z' T7 t1 n
waituntil <condition> prio <integer expression>;& E; _& a2 T* h& M4 h0 l. G
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: l: L% E W# U7 l3 m d" g( G以上为常用的函数!
1 H) `+ C4 r5 c2 R! B- [还有很多,如有需要我把资料发到你邮箱里 + O3 s# x* v, ~# p
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