|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
! _, Q. z7 p* O' Z& r if <condition> then
. h& X5 [! m( S <statement sequence1>;
" Q% S S: B2 M& L2 E5 B elseif <condition> then' D$ l1 F6 i2 k' Q2 F1 W
<statement sequence2>;
@. }; Z1 E9 u' W4 d5 X else 0 b: W& Q) D g2 F5 v- S, ~
<statement sequence3>;, T8 B7 y' l7 v+ u' ]7 m
end;0 O+ G: d3 i" d |0 N: ?4 l' l* |# r7 |
如果分支比较多,用:
4 X$ Z- O3 J3 i! y# u inspect <expression>( Q, N& f9 `7 d8 w! P
when <constant_list> then& I+ |3 Z) C- i7 c* d
<statement sequence1>;, ]3 \+ D5 T0 g8 v
when <constant_list> then
3 e7 i& R$ x+ z T: W <statement sequence2>;
+ F5 D2 k. T9 q+ Y' N6 G- } ...
- \4 ~! f9 Y4 G, E; T8 H; J4 }% x# [ else0 z; ~6 ` J; i/ Z/ B1 u
<statement sequence3>;+ q7 p1 b4 I* G
end;
. p* W; X/ r# }2 Y* b: R0 w- t8 ~. q! A7 s' Q, {1 Y
2循环语句
3 |, }# O3 r( b; [; J$ L& I (1) from <statement sequence1>. l. \4 \7 V4 @/ N4 [
until <condition> loop$ @+ b+ |+ u5 X \% y
<statement sequence2>;% n3 n1 O$ M3 b$ l# R( a
end;
$ A( ]) ]4 N6 f! ^" J (2) while <condition> loop
2 S& S1 y H0 O! o9 }& |8 ^7 }% o7 c <statement sequence1>;
" G2 e7 E6 D/ k3 R) i: Q end;
9 i/ G7 E' N- X' z5 E# x2 |) w (3) repeat
! k" r# ^5 x e- r! ?; m <statement sequence1>;
1 b; v- P) f# B; S until <condition>;
) p2 t* \ _# ~ (4) for <condition> to <condition> loop; a3 P2 L3 C4 N I C4 w1 Q' r1 D
<statement sequence1>;& ^& M/ j4 w- @$ D
next;1 f1 Q4 |7 S, G" Z/ |$ S
3中断语句6 R( x7 V5 ]$ g
waituntil <condition> prio <integer expression>;; V9 k5 m' d8 @. ?- M1 I/ k; R. g
/ R7 \, s2 R+ V$ P5 U7 c6 r1 s3 i" x5 X' r
以上为常用的函数!- I1 P% d* d& y, q. G
还有很多,如有需要我把资料发到你邮箱里
) u2 v' P; j* a
) ^# E( L$ } z9 A" S# f
/ q$ O' ?' U( J. w! w2 P7 ?5 z B6 T, B9 l8 F* ]/ H j3 }! C; l' _9 j
0 {7 ~, j3 Y1 E6 w8 K
) p8 X7 Y9 ^- l& P, m& Q; N8 G) s' R$ i1 b
$ _: D2 r* j2 m9 @
. F o B; q5 t; s" b3 R$ G
. _. z: T+ X" ]# w' C% L1 n
3 M6 X% C* u/ o1 E: @! S" X |
|