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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
l n" w. m5 y) G! w' l if <condition> then) j6 s1 F6 j, e% q, Y- A
<statement sequence1>;* I/ D$ F* o2 g0 ]* F
elseif <condition> then( f7 H/ L' O: I' c2 N
<statement sequence2>;: R7 z5 A$ i0 G
else
5 g5 H9 A6 \+ }! e; p: m <statement sequence3>;. {5 ~- R$ _( E1 v6 }) `
end;
) e3 D' I& q$ ~$ ^+ Q9 ~8 r# y如果分支比较多，用：1 ~/ Q! n- {5 c8 u- ^
inspect <expression>; g+ ~" I) Y* N: ^! i4 d
when <constant_list> then
! K+ ]0 ?4 |3 P& N7 M6 ^! { <statement sequence1>;
4 A% w8 Q" a. N: r5 ?! K when <constant_list> then
" g; r# D9 z& x1 T j. @ <statement sequence2>;
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else
1 m7 c' l" y1 h* h% O <statement sequence3>;2 b- |' V, f' C4 S$ Y
end;
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2循环语句- t6 i8 l& ^# ?- z+ d
(1) from <statement sequence1>
! {! Z- d) R' H: B7 P% Q! b until <condition> loop
) P% F4 K+ R; E! e6 A* g/ [) i <statement sequence2>;
9 }) I6 z# ?/ D4 u0 c2 L/ x, y end;
+ p1 q9 P; Y1 \ (2) while <condition> loop4 B) N2 {: j7 p7 l5 m
<statement sequence1>;
7 R* _, J E& @: m) b end;( E* v5 U( \$ ^
(3) repeat ( F6 Q. ?3 I( N. S% b; a, f
<statement sequence1>;: b5 `" l6 A' c! C* w. ] C9 h2 M6 a
until <condition>;
8 [ q' X5 L0 `, Q, o- A4 O( S B) b (4) for <condition> to <condition> loop
$ I6 G+ ?4 g6 A! c i6 G& \4 I2 u <statement sequence1>;( } ~$ v) U8 x
next;
+ _, k y0 f, c \' m' o2 X2 n3中断语句
' n# I5 O& G$ P$ L5 `* B6 d waituntil <condition> prio <integer expression>;4 ~9 q* V2 c" l
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, Z# l$ n7 V. j7 o: a+ j, \! A以上为常用的函数！
) I: Y5 }/ W$ ?, t% L还有很多，如有需要我把资料发到你邮箱里
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