|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句$ a7 L8 V* ]1 ? a: r
if <condition> then! U4 ^! w; P7 e6 l- x7 @3 D
<statement sequence1>;( s# u# N: l2 {7 }/ Z; F/ p
elseif <condition> then1 T6 G- c' s5 i# d6 ^- l+ O1 J' ~0 `
<statement sequence2>;- ~1 b9 L. y; ]1 H, ^8 h* U1 v3 E! @
else
- I/ B1 c" o& x/ d <statement sequence3>;
( V- T. W V% L `: u! B3 v; A end;
% N$ O% h5 c, z如果分支比较多，用：
0 w2 j4 o4 e. z2 h: P6 w& q% } inspect <expression>) l- J% ]! U8 Y1 {
when <constant_list> then
5 k" m0 g0 v- {3 H. L <statement sequence1>;
1 ~! | x6 T5 v( M- K when <constant_list> then
) k! y9 v( L- W" n4 z( H* R <statement sequence2>;
, d, A' \% H8 [ ...$ |: d8 _; G# m) {9 U+ z
else( v1 p, D9 l' Y/ S( D
<statement sequence3>;- a* o& O: Z- V$ Y( ~! V
end;
4 s( X3 ]) a1 D1 I4 s
) f# t: V9 B6 f$ l# g2循环语句! U `( K& u2 R7 C6 B) s
(1) from <statement sequence1>
. c( A1 I0 j; K0 a( P until <condition> loop v9 T8 M/ s/ U2 m) |7 P
<statement sequence2>;- v: @ c4 e8 g3 ~9 y8 ~. l
end;
* d# ]7 |! W5 ?$ X% @5 k3 k (2) while <condition> loop
" c* D- S& b6 M8 W& D9 B) q3 ] g+ d <statement sequence1>;( f9 ^0 p9 T8 I5 S
end;/ S. e5 J4 D0 a- w5 P# @$ Q! F
(3) repeat - t0 J D$ H# G! k0 U% b
<statement sequence1>;
# X5 V- r$ k8 ]* }9 ? until <condition>;
$ V0 `0 J1 J) K8 ~1 E, I (4) for <condition> to <condition> loop; Z5 \8 U1 z1 F" J8 l0 k4 l0 H1 D& U
<statement sequence1>;7 K; [5 ?& S2 q) s) o N9 b4 Q
next;. z4 K+ b- d) j; l' @$ X
3中断语句
% p- ?8 {8 {( J9 b, X4 N; g waituntil <condition> prio <integer expression>;
+ B8 j2 ~5 H: m8 ?6 P: ], a. u
" o( p0 ^2 F+ z; ?8 w0 v以上为常用的函数！ T& g4 O6 r9 h; x$ U$ M4 P
还有很多，如有需要我把资料发到你邮箱里 & m! H' x! C; V, s3 g7 n
7 |- j4 G/ h; B+ n# s* m
4 `9 H3 v% o: z( Y+ D3 E8 R# b/ ^- z$ E, l1 @' D' @6 k3 b# f
3 m" u. P& F5 L5 g7 m. `
0 B5 c. I9 d: ]
: b$ r% c1 N1 h6 Y7 ]; n
3 ~! z, S6 u4 q; M
" F8 R) o7 k6 M! b- b8 S4 T' o) v( B' P
1 [/ u" u8 p6 t6 [) \- K/ K$ j: y
2 c8 L. z5 A! H
|
|
[复制链接]
