|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
! h: ^. Z: c1 k& d$ C# U if <condition> then
; {. o& g8 \' ^ <statement sequence1>;
( f5 R6 j; |0 G' D7 K: W& ? elseif <condition> then
& p: d2 u& {- G# @) C' r <statement sequence2>;" y- I- N1 U! M$ n+ l+ Z* N6 r
else / U/ a f* F4 x U! m f
<statement sequence3>;
+ v: h6 g- c2 u- e9 N: B2 J end;
$ I& o/ v6 G2 p- j' r" Z! c/ F如果分支比较多,用:
+ n* D: ~# C* Y6 b. f6 ~ inspect <expression>5 @0 O/ X1 r5 z* R
when <constant_list> then; v% M( P$ c" H% g
<statement sequence1>;0 w [" b3 h4 V: R T
when <constant_list> then
5 m4 W( v/ q( | x* [7 x4 m <statement sequence2>; l0 ]( g' K$ X0 ]4 `0 K% h) u
...
$ z2 a+ B) y) z5 i6 s' O9 ~ else
& \1 D+ f4 I! N; |% ~" E% Y <statement sequence3>;
6 ^+ E- ?, [( Q% K O4 tend;" ~6 s1 W _6 b. N6 V9 K) E
0 U2 s# ^1 ?! T2 ?. |* S( i2循环语句# q$ {& o% ]& Y( g! k
(1) from <statement sequence1>* k. ^5 A; Z1 \. h1 R
until <condition> loop
" C h/ X+ @0 R7 {: e <statement sequence2>;
+ L8 U& V' B6 T ^+ W3 U end;8 s$ C; G/ R$ k/ C; x
(2) while <condition> loop
0 K+ m5 p# k9 e2 | k* F3 l$ B <statement sequence1>;8 Q2 x& r' @% z
end;
6 ^+ {$ t, w1 y6 Y' {& [8 p (3) repeat 1 H' J5 j2 S" O' Z+ f* e1 i: m( W
<statement sequence1>;& c% s; _& x6 g! T
until <condition>;! V+ o8 b6 M4 C2 z
(4) for <condition> to <condition> loop
' t5 G* ]6 i; s* N5 x <statement sequence1>;" z1 x0 U& ], q: g' R8 q% ^ i
next;) z( f* F2 L$ o7 _7 `- f5 t7 G3 n
3中断语句
8 h6 }0 @$ t+ Q2 X- J( ]- \( l waituntil <condition> prio <integer expression>;
5 H' A2 B/ u: a& w9 _& L4 G* V, [( f# s* w+ b
+ A6 d' q6 J# ?5 R* \' Q8 ~1 P
以上为常用的函数!
8 d( t: s1 F$ R% t9 X; {还有很多,如有需要我把资料发到你邮箱里 $ {& l+ l$ F5 Z/ C3 L6 f$ P
4 U2 q- @# d s. s; L F! T* T
3 V$ G [: c$ m9 L8 f% i& L5 f/ X! o+ e
z4 E0 S2 a* C7 E" X& i: D4 {/ k* c p. ?' j' u
7 ~& J; c0 D3 x8 H P0 p0 T5 w: w
2 M0 {2 D3 {2 b& n- U2 n0 J
6 @* N0 S; l, y4 f$ O) C
! t1 _/ i" U& s p" W- ~1 {4 b/ K/ S 1 u* {9 q4 _) O( ?: G
|
|