|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
8 w D' d! ]' G4 z& v/ s/ z if <condition> then
6 K9 M1 v5 x" i c4 H/ M7 P* T' F' C' b8 m <statement sequence1>;* B2 Z: s9 T& A; K/ [$ u
elseif <condition> then2 ?" I, H4 b) {/ i
<statement sequence2>;# f/ D8 U2 l2 c. O4 K
else
% x9 I& d1 t+ b! r$ c <statement sequence3>;2 F3 u9 s1 ^5 W. E
end;
) \5 j( r/ @/ W9 N4 F0 U8 K7 e) f9 t如果分支比较多,用:8 `+ i) V6 f/ C9 `. c% h& M
inspect <expression>) h- m$ z5 r% ]" ?2 p
when <constant_list> then2 b# W T; O4 z" I$ n+ e1 V
<statement sequence1>;
+ ~* D6 p2 s0 ~+ u. b; t: m+ o! P when <constant_list> then, F6 f6 }! b6 R/ T" W8 T: A
<statement sequence2>;3 K+ g% g( g8 G! U4 m; P) K
...
5 x/ F: B# o8 c else1 [" @! x" ?) C1 [
<statement sequence3>;
5 [6 Q# l( Y& @end;4 [5 o& `: U; O0 y! N
8 o( n! r, D! @2 k2循环语句 g& m" a0 ~# ?# c9 L! d) Y& u
(1) from <statement sequence1>
) f8 b( G# V. B- T, o& G until <condition> loop
7 B1 `: X& G, o; k6 d <statement sequence2>;
6 b: n6 }8 S _ end;$ e* ]& `! T4 j7 l' i3 f
(2) while <condition> loop
1 |. X+ E: [# i+ Y0 g <statement sequence1>;
# {8 l9 |5 y+ P; D* q5 K end;4 [2 X% `0 Y( y: _8 C
(3) repeat 7 B# V9 S p X0 t* b+ r0 I
<statement sequence1>;
' P0 Z( `% a& `7 `8 g! J" M until <condition>;
( V* f$ X# v3 O8 `3 c1 m7 u+ d (4) for <condition> to <condition> loop
: b5 S3 U1 l0 H: w& r8 i <statement sequence1>;1 e5 `/ m- l$ k+ k# g5 }, r
next;
]( C$ `6 f+ y6 }$ Z1 Q3中断语句
9 w! p+ L4 ?) z3 C+ p waituntil <condition> prio <integer expression>;
# Q0 B$ `; M3 W: a4 u$ b/ M, }0 S. Q9 m7 V% r. X
# C& Z! @) P$ C* T以上为常用的函数!
2 d) U C6 g6 W还有很多,如有需要我把资料发到你邮箱里
* M7 }7 p0 s L3 I6 b
# s) i: a* ?5 X3 B2 l* W+ \2 |
# W' g- Z# Q% U& T5 A. v; P( ?& u* E8 T
3 O" p, l2 O' |
5 M3 e( q) B# H: B3 L2 }; ]& J% ]* l k+ T8 j, i/ @' [
1 E% q9 H. v' D; J/ a7 Z2 I" j/ N9 @. g( U8 @
. z- c4 z: \0 I* Q; } ; e" f9 d) e x' t& y
|
|