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发表于 2012-11-13 08:48:12
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1判断语句: [. m8 P2 Y3 [2 h- i7 [
if <condition> then
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elseif <condition> then) ~9 M5 p5 Y( @: f
<statement sequence2>;' j) h, Q3 v, K1 p# r, i, x
else
' Y( I6 M+ t3 W; u, K <statement sequence3>;0 ~! P/ s D/ H3 y& e# q! _
end;8 _" b9 L" i- n' F( B" y' ~
如果分支比较多,用:
' \' X; c& ^. p- _/ S. q- W inspect <expression>
, X" o0 X$ t8 A9 b4 ] when <constant_list> then
# I2 z$ _+ w) {8 ?. S2 V* c! J <statement sequence1>;) ]9 {! Y/ _* g3 W" K" o0 x
when <constant_list> then
) }% ?5 o& }; i! d' n <statement sequence2>;
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else& C" S& w3 Q7 r1 h" P* e
<statement sequence3>;! t* T1 \# I( j" o7 ]: Q; s; @: x- e
end;8 \) G: W: u5 L+ ]
y& i4 f) }- Q: M2循环语句) d! J' R- s7 Z+ q" M- V p
(1) from <statement sequence1>
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<statement sequence2>;# |1 t6 s) ~: U
end;
% t/ d2 o" @9 M+ C3 ?4 M (2) while <condition> loop
7 n8 H6 Y5 S) F3 E <statement sequence1>;6 f2 Q3 h% f+ A h; ^
end;5 H2 L) k' z. \1 n( m% }
(3) repeat
" N/ ?4 E' ~8 s- d3 b P* x+ [3 E <statement sequence1>;
8 b, S6 g1 d. P# I; b7 Z until <condition>;/ A: q5 c$ U- J
(4) for <condition> to <condition> loop2 g4 b9 G( E3 Z' }9 m3 Y- F' f. T
<statement sequence1>;! ]/ F$ d2 W* l1 ]8 d4 {
next;
9 f- u* i! g: |+ h N3中断语句
+ ]/ b2 p# N) o) @! X/ { waituntil <condition> prio <integer expression>;
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以上为常用的函数!0 r$ c# c8 {. w( [2 ~6 p
还有很多,如有需要我把资料发到你邮箱里 ) k6 ^5 Y9 @- v" x
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