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发表于 2012-11-13 08:48:12
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1判断语句
- X- O) A2 Y: n* Y! ]" u if <condition> then
' ]0 X: e& Q; V( `; s# h <statement sequence1>;2 M. K) @5 A: Y5 o8 D( j$ R2 P
elseif <condition> then: O' Q2 {) ~! i O
<statement sequence2>;: g9 ?5 g. a5 z# C. z
else
& B. ]% s# L/ J7 K: s1 i <statement sequence3>;5 g& X# n( D/ E9 T
end;
( L8 ^7 @9 x- v$ v$ T. d如果分支比较多，用：4 Q+ F4 s; |- u' g+ N
inspect <expression>
# U0 H @6 a/ X2 j5 ~ when <constant_list> then
0 o$ M8 S2 H1 K( \ <statement sequence1>;& h) \ A3 s5 m5 B7 |) | @9 N
when <constant_list> then
( }2 T9 Z2 g, }# m# d: @ <statement sequence2>;
7 N- U$ V$ `% i ...
1 _" M* [' X, l e b else! I1 E/ m2 ?6 _% \3 n2 D* Q
<statement sequence3>;
% I: b1 P# k. o. x3 Uend;* w3 H7 l$ c, x5 k& J
' I; G( d* k; l7 f8 C- A4 i+ x% Q2循环语句
6 r3 h; O- @; e. Q* J0 ` (1) from <statement sequence1>/ H3 d0 }" e& }) K! X) b* I
until <condition> loop
! f( X3 J7 E# |3 @$ ]' Q/ { c& R; q <statement sequence2>;0 {( m) q& q6 H
end;& U+ Z1 p/ y, s( s4 }$ _
(2) while <condition> loop
8 F" k: J: E/ j; \) L <statement sequence1>;7 T* G$ n/ w; O S+ F
end;
) b2 I2 U% t7 W& \/ U3 Y (3) repeat
% ?" h/ o9 n5 T7 `# X3 ?1 F( ~* ? <statement sequence1>;
; F8 n6 N& ]- Y5 |0 g2 b9 V# | until <condition>;
# B' W, f6 k1 h1 \8 K/ M (4) for <condition> to <condition> loop
0 Z9 P x& r9 [5 @& J$ ^ <statement sequence1>;
" H* h, N9 B+ f8 e! e next;* r5 f4 K$ B1 `0 g ~0 a
3中断语句* F0 G0 d. g' |. G
waituntil <condition> prio <integer expression>;
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* y% ^! B1 g; d" A' `6 d
以上为常用的函数！
$ [5 x, y9 X2 @* k% G/ N还有很多，如有需要我把资料发到你邮箱里 # e9 f; U. [/ l- ]) S2 r5 [
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