|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句- j- T6 p f3 Y' w! U: U) T. r" X
if <condition> then+ j. }( }3 o4 N: d# A" F! W
<statement sequence1>;
, } e& Y5 e) l! ^$ w, [ elseif <condition> then! O w' B/ S7 Y1 Y" }+ l3 Q
<statement sequence2>;
; ~1 L4 F; W* f# _0 v* M else |) I% F% k G( }' i8 O
<statement sequence3>;! J' {3 S' E7 `: C1 x5 f9 m
end;7 @* r3 e3 P) m+ j; \, a
如果分支比较多，用：0 H4 K. ? p: u7 O
inspect <expression>
' W9 H. H% f; x1 z3 ? when <constant_list> then
3 [4 H9 j8 u% f9 \5 H, G5 i <statement sequence1>;
- C1 p0 G+ B, Y when <constant_list> then
, o1 X! P2 `" ? <statement sequence2>; }- U% `" `" \+ B# h1 V6 z
...
) t8 P6 T ]' M5 V else" |9 F. s/ ?" z/ A8 f2 j4 o: V
<statement sequence3>;
0 W2 F& ^$ Q' l9 w8 K1 b8 wend;
4 S7 |/ F. w1 h4 H1 c6 h" g; c& n7 N* m0 c$ }# |" {& Z) B
2循环语句
3 I6 @9 S8 ?" M/ ^1 w5 @8 K2 D2 M (1) from <statement sequence1>
: W/ l$ b7 O$ J5 m Q until <condition> loop
" g- ]% Y. a$ m& P. N* R4 d) y <statement sequence2>;. d4 ?2 D. j8 _+ j. m2 k
end;7 K& y1 F$ O$ F: [
(2) while <condition> loop
. E4 O- @7 T/ u5 ?6 f! y/ t <statement sequence1>;
# J, T( P) c7 r. F end;
1 ]" U' ~ {5 G) s (3) repeat ' y4 f: Z( E& M5 ^8 M6 I
<statement sequence1>;7 p6 I0 b% k6 a) V9 o* K! m1 ]8 n3 n0 P
until <condition>;. b- l& g& `$ t$ f, U' k" G! F" C
(4) for <condition> to <condition> loop
3 H' U. L. R, [0 p8 h <statement sequence1>;
! c9 {4 A; @/ h. k( v8 B% E/ f9 t next;
$ h+ i2 a2 K& _: X8 p/ C8 D3中断语句
0 H/ _/ F( s5 K- ~ waituntil <condition> prio <integer expression>;; {% D$ e3 U* Y6 k0 O
6 {$ R5 w; W$ n- T0 ^
; b0 r, o6 r% n/ o1 {% q4 M以上为常用的函数！; l: W" f) q$ I) Z
还有很多，如有需要我把资料发到你邮箱里
3 P" i0 o) m$ f+ E
) ]0 m; m( A$ N7 ~/ x0 z- K1 P+ Z. K0 b7 g
& W( P0 [: d5 g0 \' s5 `
' T9 C8 q1 w$ Q2 _, I& k
5 W# Y4 C" T1 s7 v/ }
5 S/ x6 k$ f% R C7 v2 C+ g9 [: ~
1 M* U1 O8 E6 N7 E `; H
8 K% b: l, V' f3 S; @
, i2 c) C0 g C8 g # y. B% H3 q% n9 @5 q8 R
|
|
[复制链接]
