|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句( W* C, q% ~$ e9 f2 r
if <condition> then. ~5 {; Y p/ B$ M: \
<statement sequence1>;( T3 G) o. H& K4 C9 K
elseif <condition> then. ?2 n3 u5 P" W4 T: }2 K
<statement sequence2>;
* e0 F% K/ J/ f, w; f% s else
& y% P1 f: b* x3 L, `2 z4 S <statement sequence3>;
* ~: ?# w6 h0 q* z9 ~ end;. E7 K+ w8 Y4 ~0 c, ]/ z5 O" L
如果分支比较多，用： h' K& P: @8 _8 ?
inspect <expression>- L* k$ r( m8 ?
when <constant_list> then
. F. B7 i; X1 a! O8 D3 e <statement sequence1>;2 Q$ Q3 Y3 S7 D6 r0 G/ o
when <constant_list> then* Q8 G- T4 w o: w- d7 m0 E
<statement sequence2>;
4 g! M1 b) R" W$ {) E9 K0 L ...% I) ~5 N$ ]7 c( }% I
else. d6 N) A8 B# T' i: c& w
<statement sequence3>;
Y. t7 c+ Q: w% Uend;
4 D2 Z! s# n* c ~5 K$ U& d) g, z$ l5 Z& h6 {8 e) a
2循环语句
}/ W/ `' u1 R# Z! ~ (1) from <statement sequence1>% W2 Y5 e8 \( t' I' b+ x$ s
until <condition> loop
2 t* _" ] `6 B7 V <statement sequence2>;- x+ f' s$ G A$ `6 x, Y" G1 I% A: e
end;
6 C7 ]: r! N! V8 V5 i( K0 a (2) while <condition> loop& n$ h# d7 ]6 h$ u- H
<statement sequence1>;
# C# x3 `. j- S) X( R7 o end;
, g8 G! @6 G7 V (3) repeat
# N/ @$ f. ~7 m0 D8 h: d <statement sequence1>;3 e" o" O% ~% n2 c4 {
until <condition>;
/ {; b; m6 O6 b1 x' l* k! b! q (4) for <condition> to <condition> loop0 s8 D7 {. c3 o6 K/ j7 t2 ?0 h
<statement sequence1>;9 O1 b8 M7 E* ~5 x* a" X+ D2 L" j5 ]
next;
6 S y* j p+ O- Q3 X- m5 S2 }3中断语句
8 k; U& R- C* r! S" T/ P# c waituntil <condition> prio <integer expression>;- o/ H6 R% Q+ ^+ `
& n s! d( w' c5 N+ r
9 Y* e4 x3 o* z* c! K1 N9 Z
以上为常用的函数！
4 m* d: j, i4 }7 s, i2 t/ U& ^还有很多，如有需要我把资料发到你邮箱里 % c! q$ p) w1 b; Q1 k4 j1 ^
0 {+ [' i' I( G1 B6 p6 E6 i
, {$ B# Y# [# C' n. W
$ a3 T: _/ H' q8 ^% f; o
# ]! ?8 K# `( r# n o. F- T2 ~7 @0 u; c4 \+ w- Z
" G+ ^- d, j% Y( R9 \0 q
6 V& {4 p5 ?: w9 K: z& ?/ R) D4 l1 `, \: P
4 q/ Z/ y2 X+ l4 d
, ~6 k7 n* m8 r; `1 y8 y- x
|
|
[复制链接]
