|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
4 T3 C" Z; S- P0 p if <condition> then- R5 v# S! Z! m1 h
<statement sequence1>;0 a& q! R# h7 T# y" Y1 j
elseif <condition> then
4 G0 y" {' u7 j7 J <statement sequence2>;. X+ D- p q3 Q6 H5 Y, ~& s
else % q3 |) o" f2 ^
<statement sequence3>;$ W, O x' A1 N& E4 U+ e
end;& L9 w2 n# E/ a# V2 g3 s
如果分支比较多,用:
! F( z% e4 i7 f9 A2 |/ L( _ inspect <expression>
* {, \7 _. Z( d& R! L: v when <constant_list> then. G2 k5 g( @ g! E, b5 |
<statement sequence1>;* l8 y2 f5 Z# J" H
when <constant_list> then
9 A0 c4 ?# q' b; e. O& a <statement sequence2>;- s) P8 V2 ]8 t
...
" M& X3 |2 B- f0 o$ _; b1 C else% F# P* W+ D; X- g4 P
<statement sequence3>;
; q) Z' F" S: @, O; Xend;) v N- A* Y S. |6 M' m' c: i. g
I6 _! G; t- K+ g
2循环语句
: T. F7 T) N0 C( v: D4 ~: L6 ? (1) from <statement sequence1>( p. b- Z% v; f$ F& A
until <condition> loop1 k' v6 H, W& r7 l) V
<statement sequence2>;8 X8 g+ z- l$ d) x" c
end;, M, w2 R5 H/ Z& E! E( ^
(2) while <condition> loop* ]8 J5 y1 }7 ]
<statement sequence1>;
- g1 {; n0 t8 \. @4 D) t end;
* {( D& g1 s) q' i' }# Z (3) repeat ' f* M! Q* S |
<statement sequence1>;
9 n6 v; L2 i% |3 |8 K, b until <condition>;' r0 @- {& V6 K4 f% R9 W$ t: _
(4) for <condition> to <condition> loop, z8 O- B: I7 @4 u$ `9 q
<statement sequence1>;
( f6 `/ a2 N0 A6 p3 \5 l next;
* J; G. z: Y: o9 `) ] V/ s0 C! v3中断语句
& F8 [, a1 \0 U) h* a' N) s& A waituntil <condition> prio <integer expression>;
* q2 ?- \ E- f2 r- ^% H. ^) i2 C
; T! M) s, S1 I# i/ C
: _9 v7 o# ~+ v, ^以上为常用的函数!
0 E. P- U3 ~+ g; \( `还有很多,如有需要我把资料发到你邮箱里
9 r* a1 [9 b$ B5 I5 t" Q5 O
* H3 C" t0 |7 C, P6 a: c2 g8 V1 P
" U' n0 l0 u2 {. O% q 6 e2 f7 U1 c. n9 X# p" | \
8 U: |* G, w; s9 g4 ^" `. y0 n5 j. C
1 m4 m s' v& O: D6 [
, o# Q, [$ r! G2 @# g
- g, E* a% c8 v: ]0 m3 {0 _6 x7 C) O4 z
: x1 W( y+ R6 c( {& k
|
|