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发表于 2012-11-13 08:48:12
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1判断语句, x6 n0 |5 S% F+ v. ]& @
if <condition> then! n4 ?2 s4 v& A
<statement sequence1>;
: O/ a+ i, E3 r0 a# J/ |1 C+ V7 N elseif <condition> then6 \+ |3 r: ?4 G1 ~( A7 a* f# V
<statement sequence2>;
" z! H0 g$ }5 v8 Y& ? else
4 I: i0 f- ~, q, C9 s( \ <statement sequence3>;
5 Y( R7 c, n1 r, B' N end;
9 w# N# J9 ~7 q% V2 e如果分支比较多，用：
# A' U4 r9 _3 d9 X5 V. l( P inspect <expression>
# }5 H, q7 q( w when <constant_list> then
( ]4 C& ?3 o' {/ W" z <statement sequence1>;
. @7 B+ I. x" h$ f when <constant_list> then* ?% X% w; m) ^& w, `- k# S" [
<statement sequence2>;) j7 R+ g! j' b
...
1 b# O) j/ c( L& H' C* c else
& [7 }" Q+ |' s. N8 l* _" Z1 T <statement sequence3>;) H7 h; _* Q5 f
end;
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" H& J. M0 _" y- A/ C6 t2循环语句% K# l! S: a; k8 r
(1) from <statement sequence1>
+ i; M7 ^$ o- o# K0 S until <condition> loop
& J9 @; Z1 M. ^+ u4 B$ D6 W/ G& n% z <statement sequence2>;0 u/ T# Y4 v, Z3 v9 ?+ N( D0 c
end;% W+ h: Y' Z; [3 | E5 v* R/ t
(2) while <condition> loop4 d7 u% o c1 q3 a
<statement sequence1>;/ c! J+ j. |! {1 r) g
end;
( q8 E* a& W$ Y; R* B* o (3) repeat
) y" z9 N+ k5 [( E% `* g/ } <statement sequence1>;
( A1 x$ V0 I4 S0 h" v- r1 }3 {% o until <condition>;5 u1 U) t. L/ F# ]2 T
(4) for <condition> to <condition> loop
" e: \* O& i- m% `4 s$ l <statement sequence1>;- {' t8 {8 N- X! [& h
next;
7 V% ~: l8 i4 J1 i2 O) z4 l% F3中断语句
9 m" r/ j, Z1 P: d1 J& p* g waituntil <condition> prio <integer expression>;
4 N$ X6 F" n$ f9 @2 L
# F; p: ~( ?6 c k
5 x* L: l, s! q% q0 k: b( ?4 a以上为常用的函数！
! B4 B! y5 |; A. l8 O0 M还有很多，如有需要我把资料发到你邮箱里
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