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发表于 2012-11-13 08:48:12
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1判断语句( U: o+ Z+ Q0 {7 a& I7 f; O# ~ L
if <condition> then
. j' k& _$ U C4 r1 [ <statement sequence1>;
, i% C8 k" M0 F. F elseif <condition> then
8 |) z# t: a* Q' x7 l <statement sequence2>;4 N( ]+ n$ v6 U2 J4 P
else
" C# s9 Y5 \. ] q2 i7 T6 t <statement sequence3>;7 \" |( F/ P+ [4 {- i
end;, Q6 `9 a1 R, q/ M! q
如果分支比较多，用：
' B' R) K+ @* z& F& P inspect <expression>
+ h. J0 R, x* b- H5 i" Y when <constant_list> then
3 { n0 ?' c2 A5 c: H- k3 |) a <statement sequence1>;
1 H f; r( |& Q8 ~6 R( R when <constant_list> then
" S- P# D# m |2 D <statement sequence2>;
5 y; t; Y+ u& s% g& |9 `, e ...
. g. T% y5 N- y3 S else
: f; ^* V5 j* |$ Q. R* X <statement sequence3>;7 @8 W+ ^, y0 F$ j' v7 k. k+ g) g
end;
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7 T" A W+ d6 ~3 w6 R2循环语句
0 U& k9 G! b9 O( c$ T# P! T$ z (1) from <statement sequence1>
" G/ r' Q7 {/ l- S1 H: O+ E% C5 w until <condition> loop
! M2 W. C0 [5 y4 O <statement sequence2>;6 r" f4 e& V( w; R) E0 M
end;) R0 u! K- S* N* i6 Z
(2) while <condition> loop
k$ E6 z) f2 Z+ N7 ~; |) w2 n6 K* f3 K <statement sequence1>;1 h: w) v4 B# g; J2 T4 X: K9 Q4 ]
end;
" \( a F3 E0 Q1 [& { (3) repeat
/ B7 G+ a8 p) q/ r) u) | <statement sequence1>;& R& i: w& B1 K% T/ I. ^$ ^
until <condition>;
! x5 k% C) s7 k (4) for <condition> to <condition> loop
* {- `) H0 V; a: E <statement sequence1>;
, k2 u% m5 {1 V8 G next;
6 n/ @) z$ k" S1 i6 C% p6 K a3中断语句
o' N+ r' L; w: i waituntil <condition> prio <integer expression>;7 ~& q! w" o; `( Q
- s! }0 i. W; z# e, E0 R
h4 A3 t9 R- @; ?以上为常用的函数！
L) n9 S' h d8 p3 s. P还有很多，如有需要我把资料发到你邮箱里 ! |0 w! R, @0 S9 p& U, f
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