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发表于 2012-11-13 08:48:12
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1判断语句' i. Q N* b+ O; v& N5 ]( C- i+ @
if <condition> then1 A* ^& h5 \+ y1 a& N5 X
<statement sequence1>;. H8 J. M2 `* l" Q0 Q
elseif <condition> then7 Z( J- L- G# k7 m; X# E7 w
<statement sequence2>;( B- G" g5 V: p9 o8 {
else 4 u0 F' {' p% m
<statement sequence3>;4 ]7 }: w' i3 [! a5 ~/ {4 ]# x
end;
7 O1 p- N3 l7 s# Z, G: a如果分支比较多,用:$ D7 F7 \# B M1 e8 P3 ?9 V
inspect <expression>
- N( ^3 a2 G' \) N" L3 N when <constant_list> then
; F/ ~/ a% Q' T( R. a$ s) v <statement sequence1>;
( h' w, F5 n* C; v) `' F3 | when <constant_list> then3 q: u' y( _4 B" E+ \" V' C
<statement sequence2>;
: j$ d, Y2 Q4 q: { ...3 p' Q+ y" V$ V/ Q8 h) V& Z0 N0 [
else2 h6 s$ C3 d2 ?" L
<statement sequence3>;
# i) S @# Y% b4 Z2 K5 Lend;# Y/ x6 y1 K+ U# x$ \/ Z1 E5 J% Q
) b1 H0 z7 Z) q! b4 i2循环语句
( L" T4 ^; n5 N) V- k) t$ ~ (1) from <statement sequence1>
' }% D* | _3 b until <condition> loop
+ Y3 \$ d( z1 r. W& S <statement sequence2>;! p1 Z( q6 l$ u. b% Q- X
end;, q- D" c; F4 K# X1 b& |4 F
(2) while <condition> loop
' r" s3 d) t) i <statement sequence1>;, P6 O* _/ T2 e
end;
, s3 G! R- Q A2 w (3) repeat
+ i4 B( c. V' L6 \* X" I <statement sequence1>;
) G f# r1 D- _ until <condition>;! ?2 B# L* B' X- I5 ^, g
(4) for <condition> to <condition> loop6 w& f# u u, h$ e, f" ?" H9 Q
<statement sequence1>;
# j! x8 K- a4 R7 j; Y8 m4 g) y next;
6 S. R$ P' F4 r# R2 A$ X! [, e3中断语句) P7 {7 C& y. w: ^4 z* X
waituntil <condition> prio <integer expression>;5 |! c# y% Y4 Z
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以上为常用的函数!
7 \8 C+ N* Y; l1 C" ~+ S还有很多,如有需要我把资料发到你邮箱里 2 T* o8 w8 O/ c
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