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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* t1 S. X/ m3 J7 [+ `3 ~
if <condition> then( W2 b7 S: ]3 V6 Y) Y }
<statement sequence1>;
+ h- p9 Z7 D8 E: c% o- | elseif <condition> then
( E. Q* H: k3 c* m <statement sequence2>;
' \( y- M$ M( w' m4 q) _ D else
) ?/ g b8 \4 h* v <statement sequence3>;) g6 |1 k- y( n4 `$ S1 B% P/ Q
end;
! j+ c6 D, W1 P I7 Q! b9 x如果分支比较多，用：
: a o4 F3 q9 u4 l inspect <expression>
, D- d) p+ \' I/ h' I- x when <constant_list> then
! g& _ I4 S8 E: J/ d2 ` { <statement sequence1>;1 _0 ?2 z$ i6 R# X- F* b1 z- F
when <constant_list> then0 v4 e f7 F: h" W
<statement sequence2>;' V2 s& U+ G8 m! O9 g- p3 i) W
...6 ?# Z7 `3 w+ U( [7 w, f9 [
else% D; z8 L6 Z8 y5 f0 b. R
<statement sequence3>;) P* c/ ?9 i8 S
end;
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2循环语句% P$ [$ L7 m# I* @ I
(1) from <statement sequence1>7 ^1 a: j/ K! d1 s3 ?, y# i2 H
until <condition> loop' F6 o' y0 k' O3 n
<statement sequence2>;
$ P' ?; x3 F. T* V* @/ |. E end;6 F! _, ` A I2 k, w$ q
(2) while <condition> loop) |5 K! V, ?3 a8 A7 A$ P0 y
<statement sequence1>;, B- `" L: J0 H# G: q
end;% }1 V8 z! i& w( b% F5 M
(3) repeat 8 Z5 J$ E: x) \6 H7 V5 T
<statement sequence1>;
4 o3 l+ _* V' W) i, n until <condition>;* w9 Z* _" i6 N- K, o% \
(4) for <condition> to <condition> loop: V; V* a; i t" G
<statement sequence1>; F0 n" b$ c2 J1 u, [. x7 Y
next;
/ j' h$ F% C/ r) I1 e& ~3中断语句0 {/ h/ \, o% E5 H
waituntil <condition> prio <integer expression>;' k! W" v- L- l' ^. b5 C4 y
" J* s4 l2 ^5 b' Z& V" H M ]( G/ s
/ R0 P. l# i, j* ]4 t4 S) \
以上为常用的函数！, x5 q* s) F( Z S, y
还有很多，如有需要我把资料发到你邮箱里 4 |# e0 m3 ]* H+ S7 \
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