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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
' H8 r! i0 q7 @: G4 Z if <condition> then
$ s) ?. _( ]- y" ?+ b8 j <statement sequence1>;+ G! K+ m0 f. v: a& G* w
elseif <condition> then3 V* r/ P% p* B3 F$ t: d- p
<statement sequence2>;
; o" N" F% L* b1 \+ y& Q else
0 Z$ S* A+ H3 @4 |. d <statement sequence3>;# h7 y5 s2 O3 \& o. |
end;$ R- g& A, Q1 D( W0 N& A$ j" k! B/ I
如果分支比较多，用：# u& m; k" `8 q! w) }
inspect <expression>; b1 x8 S# c' Z
when <constant_list> then
; q9 f: R1 B8 }4 G* g/ u: E$ H" H* M <statement sequence1>;
) H5 C- C" J) @! _ when <constant_list> then; [$ R0 ^8 Z( K' J9 [; d7 f# v
<statement sequence2>;0 s/ w' Z& b* g M: V9 H: s) R; b, Q
...
% Y) P! ]6 `2 t) q( n else
& `% C0 }' A& |% c& y: O ?; o% ] <statement sequence3>;. U, H# [$ _- `6 @5 m
end;
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2循环语句
. }, F3 Z/ E+ O V- g6 } (1) from <statement sequence1>8 N- b' e4 ^8 O# D' U4 S/ [$ t
until <condition> loop
" k9 N* S- w: [# c$ f <statement sequence2>;
. O4 D" T, n p5 m; q4 K end;
+ O% ~( y8 `8 H4 y7 [ (2) while <condition> loop2 ^- ~9 a) }" b1 |$ Q# \9 {
<statement sequence1>;
1 i! T. T, j; D9 b/ w- F end;9 ~$ D0 @5 a( v$ [
(3) repeat c1 J" }2 _+ B/ a2 t
<statement sequence1>;% Q: t! I5 Y# H5 B" ]3 D, n) |
until <condition>;
, T+ c) {: L- d2 } (4) for <condition> to <condition> loop; [( w# P, n& M( G& l/ D9 u
<statement sequence1>;
0 E9 c7 c( d1 U1 N! L! I6 K next;
) K2 ]2 Y: W8 i3中断语句
. P- [0 n& ]! Q, s3 w- n5 c2 V waituntil <condition> prio <integer expression>;
0 z( L* T ]' C9 i$ y; G. S( |2 {# z( X
# n2 c; R) Q) r以上为常用的函数！, f, ]$ ? W( Y3 o$ |
还有很多，如有需要我把资料发到你邮箱里 - Q8 P3 s2 T7 u& @7 X
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