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发表于 2012-11-13 08:48:12
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1判断语句0 o" g4 T k4 E' V# O/ x
if <condition> then
7 M$ d0 F6 F* r, x) t <statement sequence1>;
* z% }4 E6 M: Y' C! j# r elseif <condition> then. S7 e, z" ?, t, P8 c* s4 P
<statement sequence2>;
* m7 q* Q3 ?( l4 i else
) B) E7 }/ b. q" e7 J <statement sequence3>;$ Z4 U8 ^" C8 K. s5 e% w( m9 z
end;' r* d% {$ B7 S" X7 S
如果分支比较多,用:! c; K, I0 x$ d2 w, f
inspect <expression># b, Y1 l/ w ]" k' j. A8 i& R8 ]
when <constant_list> then
" k9 |* M% Z0 _4 @! B% Z <statement sequence1>;
& ^7 [0 a& a& M' L) f/ C( r when <constant_list> then: _) f- n# d c+ `8 o0 e, R7 c
<statement sequence2>;
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else' L/ }2 }: [ E8 {3 q$ @! q
<statement sequence3>;
/ @5 G! T* g+ J4 {' ^end;
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" ^$ N# ]- `( Z$ g2循环语句, V# j: i2 a- o5 b
(1) from <statement sequence1>
) g" a0 D8 s' a+ G$ J3 X: j+ a9 U until <condition> loop5 D8 C4 ]: q" r- I4 Y$ J8 u
<statement sequence2>;+ S9 U$ W8 g# v Z
end;
t# N4 y( V. x1 d: z% \ (2) while <condition> loop
; f# n1 M6 G5 m! M+ A! ]& f. } <statement sequence1>;+ }9 R3 ^9 g" R$ R' o& F3 A
end;8 m$ q2 T2 Y' T
(3) repeat
& f/ J* r8 `8 G+ b6 w/ x! C7 [ <statement sequence1>;
- F$ T u4 `! l2 N2 a! s8 t until <condition>;7 g$ d3 G0 d! _! f: M# t1 M7 |
(4) for <condition> to <condition> loop
( b8 I, v, I, U <statement sequence1>;& O' o) y+ e# v2 U) G% N/ }
next;+ |# }* i2 y* h7 J; N3 u; h9 b Z
3中断语句0 k( l$ k, ?) s( q) H( {
waituntil <condition> prio <integer expression>;' O5 C' u& \ T" o
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以上为常用的函数!# [: j! N2 R2 f3 f' N6 E2 J0 m. Q
还有很多,如有需要我把资料发到你邮箱里
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