|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句' P8 f" q3 n" T8 S+ \
if <condition> then
}! R6 {( e/ R6 ]+ |: v p <statement sequence1>;
; a) C3 s0 L2 r1 ~) H3 a2 i elseif <condition> then0 G' S. a) H; T
<statement sequence2>;
i1 v* ]5 e. D+ ?1 d else , p0 i( T3 N! a! h4 g1 O3 D
<statement sequence3>;
0 A- C. R# h1 V1 W2 a. J end;) @' w% O# ^* z
如果分支比较多，用：
, \7 E' Z0 p8 `( {' S% I0 m$ E inspect <expression>$ f5 l3 V: T& _7 i% F# K. {
when <constant_list> then/ l9 H% V$ V9 y0 t; T0 m6 B2 q7 K9 r8 E
<statement sequence1>;6 Y" Q2 Z x" a# U
when <constant_list> then8 F7 Z3 ^6 z5 E5 V6 A; V
<statement sequence2>;0 X7 `6 M' T. x
...
5 W) M, ~9 X% W. E( l: S- p6 { else
/ V) }0 Y! x5 i- e: P% L <statement sequence3>;
. F ^4 D8 L I- r7 }end;1 t6 d- x- a( }- Q, Z: E
/ z$ g* M% B: {9 u: T- S2循环语句
" i! @( e/ g& O) N; Q' J (1) from <statement sequence1>& G* m% }/ T+ q4 x! i. @: Y" \( T [
until <condition> loop/ i2 G) g6 s: N
<statement sequence2>;! n3 Y1 g/ v" J# }5 x
end;
$ t5 X+ Q# h/ i2 `. `9 E (2) while <condition> loop3 S7 @8 H i( {' a: r" X* O
<statement sequence1>;
( y5 Q* F* l: n8 x+ J end;
7 ^! v8 I2 W4 S" i1 i (3) repeat
! f- T" K1 n7 I; {: G: o9 i- { f0 V <statement sequence1>;7 f& F! w, c% F5 h, }
until <condition>;
0 t7 J& \; }, f/ e! G+ k5 @' E' A (4) for <condition> to <condition> loop5 ?% n$ p7 n% O9 j% _9 C' e
<statement sequence1>;
3 w" z9 F; m4 l) R) N& K next; Q* f8 h& Z. F: b- I m5 U2 L- ?
3中断语句5 h K* K5 k! w! S2 N; v- _
waituntil <condition> prio <integer expression>;- a. L$ L/ G, s4 y- _ | [
N6 v( I3 p) f. i% A0 s
$ O6 ?) U" i" B1 R+ r% N' z0 ^: z以上为常用的函数！
" n i. E8 o% R7 p/ K( r) E: U还有很多，如有需要我把资料发到你邮箱里 $ t! c) H7 Y! b* ?( x. I
8 F$ W: m$ i& V
. s5 H2 C* A% q) W! }4 z* k
" G1 l* J% k7 i! a/ T9 k; m , T, R( F8 f. |/ }2 {6 j; @2 i# J
' h8 p3 I$ x: x+ Z+ r
: _2 B" y$ f5 s; N/ p
0 x6 r+ s7 p. Q* S3 l5 |( p; h1 n; E( n. [$ T
# }: y$ l) T8 V5 q$ g, Z' [0 I6 d' @
0 @# b- k* _2 d |
|
[复制链接]
