|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句8 U2 O1 o! n0 K; x. j2 H
if <condition> then0 e. d5 j1 q/ i, a# u/ c
<statement sequence1>;
* E$ P% @/ _) Q elseif <condition> then
6 d- m. K: H1 x! E$ } <statement sequence2>;+ A) y" |' ^9 \0 e! M' P
else . `& s* @. i8 Y, J
<statement sequence3>;
* d, S( e" c1 W2 P, J/ F8 N end;
9 }; g! B3 s" l" j' ]如果分支比较多,用:9 i) q/ Q0 I% |% M) Z9 Z9 k; J
inspect <expression>
9 l( C. [) v$ h$ r2 Y6 Z/ d$ u when <constant_list> then
7 ?/ b0 Y3 R& c, X <statement sequence1>;' R8 W8 y1 W) S3 Q! P
when <constant_list> then
0 n! E E- _+ {+ X <statement sequence2>;, u& ~* l; ~! }* n- Q; o' f; D
.... q% G8 g2 L$ S: w- D) O
else
5 s+ T2 r+ K7 L7 Z5 y1 U <statement sequence3>;+ r% f/ w8 b# I0 f
end;: v" p# h" v# i: Y6 x
' U# Z9 J7 D( L. u9 s1 l# _. k
2循环语句
' r$ `5 i! ]0 C$ C$ F5 k- \$ o (1) from <statement sequence1>
* P) P% \" c. b2 c' |0 n0 ~. ~ until <condition> loop @% F, M5 l0 q/ o6 K0 [
<statement sequence2>;
: M `1 O0 [- [; N ]0 E7 { end;
( D+ X5 P/ W( h( P (2) while <condition> loop5 z& v( w& k! l8 P, H7 w
<statement sequence1>;$ Q+ X$ @# V3 ^; Q9 |: K' ~) [
end;
1 I$ \( a; Y- P6 c! i (3) repeat . w1 q1 L/ w7 v; O
<statement sequence1>;
" X3 v9 ^, e* W! f# {" D7 n0 P until <condition>;5 W. f/ l5 h: a% A$ Z0 }, v9 k
(4) for <condition> to <condition> loop$ K" N/ O' q# E8 p( Y. r" e/ ?: C
<statement sequence1>;( w1 q; {9 g& K' h3 L( A2 C) h9 e
next;
' N" r4 b. \; ^: g6 f# Z1 L0 O$ m3中断语句
9 S; u2 f+ _- h7 c waituntil <condition> prio <integer expression>;
* o( _0 w1 I& u( z
- Y5 E% E* ?" D! }& |
8 g! o! M* U/ b- x& S' d以上为常用的函数!" U9 N1 T! ]( @' @- {' U
还有很多,如有需要我把资料发到你邮箱里 1 d+ Y# c$ T' E! N2 A! k# V5 @0 \. N
n4 X% ?* f% s! z8 j6 \3 ^6 Z
: d3 P% ^; q, D, H
7 i- g# c/ Q. ~! q: q/ l
9 J% O1 Z" a0 f* E2 Z1 ~2 Z
& a! K) r% G7 Y) Y5 t+ R( Z) l- P6 r. h
3 h: g4 F6 g1 Y3 S. f/ l' U9 S+ ~9 X9 L7 [
t' b" r8 S: V+ C# S7 g2 L& S1 H' Z( w- m" @ s$ `8 b
4 h: V3 s* w8 K2 {$ T7 z |
|