|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
1 n; ?' F2 o6 h8 M! Z. m if <condition> then
6 a: M2 F' @# q) g$ @4 K <statement sequence1>;
0 T. J4 n2 Z& p" O' ]; s7 Y8 ?: z8 x elseif <condition> then
4 G9 K' r, k# ^+ B <statement sequence2>;$ |, ?% K R5 Q/ x$ j' D
else & u/ T" m4 G& z6 H! j4 q: S
<statement sequence3>;* ]& J a; g( q$ q- m Q5 _
end;9 @5 ^. F; ]& S* ? s) O+ |" L* N
如果分支比较多，用：8 [2 h1 T" N6 C Y! H( ^
inspect <expression># _# i4 v1 E# T: i# c
when <constant_list> then
+ i2 C. G0 I9 U5 |9 B8 c u <statement sequence1>;
( E- ~# \/ g+ @ when <constant_list> then% q) v) ~6 B, v x- D1 I$ k3 o# W
<statement sequence2>;
# z0 j, l8 l5 Q% g( o( A ...) ]+ j' |* |# \5 |, f+ P
else
$ x1 i! N: r+ o3 u <statement sequence3>;" r5 P, N2 S% N: U5 l; `, v2 u3 ^# F
end;1 W9 y5 C' T( a! F; }- H
( F j3 E, F9 _0 t$ {% g) g% v0 k. R. Z2循环语句
# t: x" G0 Z8 I6 [ (1) from <statement sequence1>* ]8 O3 H1 y5 F A
until <condition> loop4 y- _3 _. o0 R |4 b$ ^) k: I
<statement sequence2>;2 i$ o& h% M6 S: d7 x
end;
* ^) c' z5 t" e2 t (2) while <condition> loop K* O5 t+ e( L% H2 o: B
<statement sequence1>;0 X* A' K" Y, m1 W
end;: @# g* H2 K5 P* S
(3) repeat
% u/ ]+ C' E# e& W+ T6 N <statement sequence1>;
3 U7 C/ \! r& v, v, k until <condition>;
4 }+ v$ N! P3 J; y (4) for <condition> to <condition> loop) y0 N+ x$ C, n. Q
<statement sequence1>;
+ U4 J7 X. ?" O; x1 Y* U% g% n next;3 [+ }; I1 q, p4 Q; m$ w- u1 u* C
3中断语句
2 r3 R" W9 F. Z" ~; n( @- M( \/ p; ` waituntil <condition> prio <integer expression>;
5 [( G5 ?; {3 Y" Z+ J" [
! F) K9 l% T0 \5 {: a( \
; c& E# [7 N" G6 x1 W4 q以上为常用的函数！' o5 Z W' b' n' S
还有很多，如有需要我把资料发到你邮箱里 & R, o. f5 Y( c% M
1 r8 e% ^9 x5 Q: o, j5 o& r' u! v# ]! X& y* }
8 Z% z6 K8 K9 X; R" b
% {7 M4 A1 E( V# d' Q+ |% g# b; y) |( V- X
F4 e* h0 Z. u8 H% s% g) F
W/ `3 _3 _) `& h
: g6 H5 t: f4 U* D
( e+ s1 J! g9 v7 D+ K# I
" }. R& b. F! @, E) `" U( L& j1 w/ G |
|
[复制链接]
