|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
& J! `5 v# w9 C% M if <condition> then
( R1 G; i+ `3 \6 V/ `3 g <statement sequence1>;1 y( c; b- w* k. @
elseif <condition> then4 l5 T0 J: L1 T- P b$ S
<statement sequence2>;
# a! B, N* X+ |4 j& H else
$ k1 Q/ P5 U! N5 X/ Q: X+ q% R <statement sequence3>;
) M& H4 M3 C: L+ F& d+ |/ _' F end;4 a8 |. `5 |; x
如果分支比较多，用：
: o' ]/ p3 v; e6 P inspect <expression>
! M9 l+ i, i8 O2 B( Y( R/ t" |$ e) | when <constant_list> then0 F, S5 G/ ^9 a- z" \, @$ i
<statement sequence1>;3 [# n) J& P: j# L; p* J
when <constant_list> then
' V# E( s, i- ]4 i3 F F <statement sequence2>;
7 d$ z7 _( T* y: n! P* C* H ...
0 c+ w3 o% M! R& o& L6 q else
: L k' _- }$ k; v& F4 Y1 h <statement sequence3>;
) j B" ~- Q3 ]( p. C' N& M3 Kend;
" q! Y1 t4 N5 t) R5 |% y$ U1 ?: W9 ]1 }# ]. @; C6 ^2 ?3 T
2循环语句
6 f6 Q7 p( }# b/ c8 L/ U& t7 L (1) from <statement sequence1>3 v0 ?" B) G+ W1 F# l/ T& L
until <condition> loop0 K! O8 x! y) `" w+ X
<statement sequence2>;+ o+ D7 |6 z% Y! J
end;
4 I" k+ Z6 }+ t1 O* f6 R (2) while <condition> loop% n# Y; k7 Y3 I2 G: S# \& @) b
<statement sequence1>;9 t4 D! |$ {% W2 x4 V7 W m) @
end;+ T, y4 }! }, y" S- ~. \6 `2 ^/ S
(3) repeat $ U# D. O' c! K: T+ u
<statement sequence1>;" A/ h* c: e5 p
until <condition>;* m; |! Y+ N2 k8 v Y- [
(4) for <condition> to <condition> loop
& k. m6 u5 ~, W, O; B {# R! L <statement sequence1>;
3 S6 Q3 o! d8 y1 v, ?) T next;5 m8 v& U3 A( B3 m
3中断语句
, b$ m+ A# t. C3 H- b waituntil <condition> prio <integer expression>;
! {2 \' }& T5 \& w+ [
8 I& R }3 _; W" g
2 W8 z+ @" i+ q" K以上为常用的函数！7 n/ Q! z+ ?; w u/ f7 i. U
还有很多，如有需要我把资料发到你邮箱里 / U2 l0 \$ _% U0 a
( |' |9 m; P9 I' U
8 ?; ^$ I2 o0 A, J/ _9 U, V$ m9 J- p* j
# j& i, m1 W# y2 N
) p* {9 a' I9 u7 u
8 e, _- p- X+ |! S' p5 z
8 w [+ H! X+ o2 V: ]' \5 C
/ f$ @ ]' ?& {9 m+ R) p) M5 E: k/ H
" E- c: p7 Y! W* a; [ . r5 \+ d3 ~# [2 J2 F5 |
|
|
[复制链接]
