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发表于 2012-11-13 08:48:12
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1判断语句
$ _; N1 c' S1 i) d, |& ]! }, J) ? if <condition> then- z) b; I8 S5 c! i
<statement sequence1>;% \$ _- Y& d+ T' N$ J) ~
elseif <condition> then
9 X! H8 B0 d% V/ \ <statement sequence2>;
}$ v2 a+ v! Q& V4 M" X else 3 {. \$ N( H( D7 v: [
<statement sequence3>;' t+ X" l8 v, _; k
end;
( r$ r% X) h* a, z1 ~% h如果分支比较多，用：/ ?' x+ [) t* s0 J0 N3 x
inspect <expression>
1 n, E7 D& q* J9 l/ \$ }, D# W when <constant_list> then
1 Y4 Q+ R# Z4 a( A8 i' ? <statement sequence1>;7 e; m) k3 _4 j( O$ X
when <constant_list> then
) p& k% }8 |2 m: o( [, e- w <statement sequence2>;
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else
1 X& v0 x) w1 g r) j7 p <statement sequence3>;9 n6 z! k \# L) Z+ C
end;
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4 ]/ W% F4 z1 o7 O3 t2循环语句5 ]# ?# O% E! z4 e
(1) from <statement sequence1>
* p7 A( S! i' d- ? until <condition> loop
: {" I' Z9 a3 @4 q7 H- i' t <statement sequence2>;
- L( R) Z9 S9 F! L5 L end;
; m/ ~0 k+ y7 O. ^ F5 b (2) while <condition> loop
, z& P3 v% E3 b <statement sequence1>;
4 e9 d* q" I( x2 K) A, o end;
9 X) g. z2 ]# e; W/ i (3) repeat
. w( B! o6 P+ ~* z0 o6 k <statement sequence1>;" I5 c' H3 Q6 P" q
until <condition>;. }: n3 A( Q+ N7 F8 F& X) o
(4) for <condition> to <condition> loop
* U, T( X4 I, J2 F# R* o. I* b <statement sequence1>;+ ]9 ^& Z3 M$ {1 D, q
next;% Q( |9 a) |! P
3中断语句
! Y8 D& `4 ^% ] waituntil <condition> prio <integer expression>;6 s' X0 y- I. ]5 u3 |- F
: c) f/ f4 X7 g+ t* O& i
! c( e& f# O, l m6 K W: w' \以上为常用的函数！
; T( v$ f1 ?8 [4 e还有很多，如有需要我把资料发到你邮箱里 ) [" a/ m; C: @
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