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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0 o6 o9 @( a$ H
if <condition> then% B8 Z+ e3 y+ e% {/ r" S2 P
<statement sequence1>;
5 {( Z; R% u4 z0 p: m$ U, u elseif <condition> then
. N5 E) R7 E- i% V <statement sequence2>;) q7 \: m$ `3 H1 {$ e
else & _% z) ~- Q" H2 y+ h
<statement sequence3>;
" M; @, u8 j# H) ]8 ?* _ end;
/ i" l. G2 N2 X5 l) l+ ]* g如果分支比较多，用：
4 F" K u* f' x% t9 _& K inspect <expression>4 N, Z, j& H/ o2 E" V! i
when <constant_list> then
- L' _3 O- ]& ]; ^* Z* g <statement sequence1>;
3 U k6 {* W7 X! b, J1 ] when <constant_list> then
+ A) Z! S* _, p1 u# i. z* G <statement sequence2>;
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else
! f9 x2 V. U5 z0 o; g5 u1 B# h2 ? <statement sequence3>;
: z, i2 }! P1 R1 L* ]+ ^0 Vend;
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2循环语句4 q; [" {; O& v; R1 |5 U6 X
(1) from <statement sequence1>9 |/ z, x* k' g8 ?) k
until <condition> loop
) o' v/ ^1 S4 z" @3 o6 n <statement sequence2>;# p5 W! u3 u" |& a! K
end;' Q$ l# P. {( ]; s4 @
(2) while <condition> loop
0 R% ?5 T0 T) @+ W' b! }" q9 v: s% n <statement sequence1>;- ~+ e) K+ ^5 K" g( ^
end;/ e) R4 _3 o3 j1 \! b' e
(3) repeat 8 v0 N2 a1 U' | k3 k3 n' g6 j
<statement sequence1>;+ E! c( J9 b+ H) m6 g
until <condition>;
8 ?, O) S. E- ^3 b- o5 t (4) for <condition> to <condition> loop
" g- x/ o) ^0 R# ^" w/ O# Z0 | <statement sequence1>;$ b7 o A9 O/ q0 a% y6 y4 q
next;& V: t: e; |: ?* K) d1 }
3中断语句
$ y# `2 g/ h1 G+ `/ n2 K waituntil <condition> prio <integer expression>;) w, }9 H! `1 z
# O% V3 d' Y9 c8 r: j9 E. p! e0 Q
+ `$ f& Q/ q$ Y) J0 z, E* y以上为常用的函数！
5 P5 H% b+ n; e8 \ b5 O( B- L: L还有很多，如有需要我把资料发到你邮箱里 5 e% \) |! b6 L5 |
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