|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句! D% U Q- `5 _
if <condition> then5 a+ |9 ~8 h3 Q* G
<statement sequence1>; d$ U l6 N8 g& g
elseif <condition> then
$ J c! i9 _. g8 }5 x <statement sequence2>;
6 _3 l- h; M; D1 E1 `* f" H9 r" ~ else 9 O) `( Q, p( P* `4 O
<statement sequence3>;6 v! j$ `7 J! S1 x' H( b% O
end;- u& k! T. Q9 {
如果分支比较多,用:; p2 M. F: P, n( ]7 g- W+ D, c( H
inspect <expression>0 y) u, m! O. G+ d
when <constant_list> then6 G: z' d; K, b' [6 ^3 N4 w0 J9 W
<statement sequence1>;3 _6 a: k/ n7 T1 K! ~. s/ B. w
when <constant_list> then
9 o& {* k. J$ d- b& C: N <statement sequence2>;
. Q2 p! X( P Y& N; Q* _- ]+ {% u ...
: H: s- U" Q# a, G; L else) I- }$ g; d7 [, H7 @- y
<statement sequence3>;
7 w1 J# ]/ w* ?0 X: vend;
9 i8 j9 B" _3 k( o7 }
0 O/ m1 C: _* ~0 l2 v. B# i1 g2循环语句
2 g- c: |0 [1 b2 R/ s. Q (1) from <statement sequence1>6 Q$ j, V+ n' m
until <condition> loop
0 m( n6 \7 m+ v Q <statement sequence2>;& \. m- z5 w% D
end;$ d" D( g) z3 N6 e
(2) while <condition> loop8 }# d' {3 K6 p' ]7 F
<statement sequence1>;
: P: E0 _+ k1 N- m end;
4 N, \/ d, H- O; u (3) repeat : j; }4 W% Q; u% m+ z& S \
<statement sequence1>;
. L* b% F" _2 k. {5 B& S until <condition>;; i2 ~; D- g4 a& e* H. \3 g0 R
(4) for <condition> to <condition> loop, c- {+ v0 o# n/ c+ o; y1 e
<statement sequence1>;
: V( T) E* S R1 C+ d9 S next;! ~+ Z* H& u2 F& w$ R/ t& g
3中断语句
9 J/ Y1 b% H( v) B+ |8 [1 n4 e' H waituntil <condition> prio <integer expression>;
2 M/ p- g! ?6 M+ [% P! V# @' i* U$ s( l7 D$ b
6 f# ]; k4 c7 ?* H# {, i以上为常用的函数!. s* W* C& d3 W/ P6 |- Q; J, t6 L
还有很多,如有需要我把资料发到你邮箱里 3 Y+ [$ ~7 Y1 E6 h$ f [3 x4 D2 _
1 @5 a* W/ i8 B6 _% W+ c# w! r2 D- C
: a# w4 s" a1 h
k9 W6 [) g- l( C0 f' N6 G; T
/ U- S; A. O5 U9 D
7 x8 x% O5 r6 X4 F7 v& g; k2 C2 t! Z7 m; v T+ ~9 H
6 ?& o/ U2 o& K2 I- D. k
- m) K: M0 S/ k- v! K
" L3 L, z/ G r# G+ V# }; U
! v. |8 N, I% |; h
|
|