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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 C0 c8 W' X1 u if <condition> then
- L+ `4 w! C. S, d <statement sequence1>;; Z' N$ ^( }8 O! p
elseif <condition> then6 n1 w9 E+ ^( p8 j
<statement sequence2>;4 i0 ^' R& z* X4 j+ }4 _2 c( e
else
, }8 J( R: p3 o <statement sequence3>;& z, a' [0 X3 g6 L) e
end;0 y p, ]+ E8 R S" J# J
如果分支比较多，用：
' C/ ?6 o2 I) W; I5 F inspect <expression>1 }% m7 a# v$ t& L
when <constant_list> then
" |- U* O" q) w9 T <statement sequence1>;
, { ]+ J7 ~* z" { when <constant_list> then6 \* ^& k, d4 W! j/ J- ^( j
<statement sequence2>;
3 F2 Z' X/ p: h6 N' a ...
" Z: T. X& N% `0 L+ p) T5 e$ s else
3 q" C/ {4 ?% j0 K2 @7 S9 T <statement sequence3>;$ p0 D$ N' U( e3 Q7 K% x. d: r6 O g
end;* y2 r! x# X+ @2 i- U( [
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2循环语句
6 d0 l: [7 y; u (1) from <statement sequence1>/ m! l0 e' F/ L: O6 R/ A, i. j
until <condition> loop3 P$ Z2 H6 e, I/ ~
<statement sequence2>;
) L7 x1 l2 H" z" e4 w0 ]# p" H/ L end;
- O# O6 {4 ]- b! M (2) while <condition> loop
8 r4 }, n% C+ ` <statement sequence1>;( Z3 z- Y2 _& `$ R9 W
end;/ _3 W8 q3 [" T. X5 u# M& L
(3) repeat
$ f9 c" j* f; q+ p. g2 `: { <statement sequence1>;3 x7 E' n1 W) t0 P2 h/ I: O
until <condition>;
) y8 J, {) {5 H0 v6 K (4) for <condition> to <condition> loop3 H1 {8 l8 u o c/ T5 q
<statement sequence1>;
, Z$ l7 G6 ^6 h6 Y# C+ p next;
6 f) [( c' l1 b5 |2 Y3中断语句8 W9 K. J4 t" y4 N/ L6 A
waituntil <condition> prio <integer expression>;
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以上为常用的函数！( b) x1 f/ P3 `! ~1 F
还有很多，如有需要我把资料发到你邮箱里 1 t; K' w, @1 s9 S1 i
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