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发表于 2012-11-13 08:48:12
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1判断语句& S- `) s; Z1 d2 L6 z' I9 e: U6 x
if <condition> then
t) T2 u; G* c, }1 i! g6 g <statement sequence1>;
, ^+ }( {" L# { elseif <condition> then( s2 ?0 ^4 x t' z F
<statement sequence2>;( ~9 ?$ W5 O" R6 W" H$ s' [
else + N% W' a9 N4 g# q5 c& o
<statement sequence3>;2 z# }3 F0 `1 P
end;; M0 {8 S+ ], v+ ?2 Q( D
如果分支比较多,用:5 c# e1 [, q5 J7 o2 E2 y+ n1 W
inspect <expression>3 q+ G1 A# s8 z A6 y) v* Q
when <constant_list> then
5 i* ]7 [8 ~# |+ f6 h6 } <statement sequence1>;! b1 a7 I: ?' o" O' X; P
when <constant_list> then& K" ~& K: b2 z
<statement sequence2>;6 ^8 R4 Y3 f% |. r
...
/ {1 ?( d3 U9 B7 q6 k) d3 O+ p, h8 L else
! Z) t: m2 I/ i% N) X1 ? <statement sequence3>; H8 A+ c* n& h- \
end;; q- [% t) d! f
* O4 T7 T) x( s5 R3 j) e2循环语句
" e$ ~# e" z: s8 M W' x* s (1) from <statement sequence1>
' h! ~9 v6 n% x$ F, w until <condition> loop
2 T) v1 K& N5 ^1 Q2 L <statement sequence2>;
. A0 F6 F# S8 b& C" h! n end;0 v+ S9 F1 M# v5 R3 C; N4 @
(2) while <condition> loop
/ z- }: K( r4 f <statement sequence1>;- E6 n9 D' j) [+ o& ], ^3 z
end;
R. ~5 ]- a* D* t5 @& {+ Q+ Y (3) repeat & ^' ^% a( E; p8 o; A5 B: y
<statement sequence1>;
2 S( R* W0 p9 L8 q6 @: ]! k) k until <condition>;$ k- x! a b. Q% R2 g# w, f
(4) for <condition> to <condition> loop* P9 p; m) D) r m
<statement sequence1>;
+ o- t4 @- s+ F next;
# A" Z7 f, [7 r0 V7 [: d3中断语句
: b' |+ V! ?9 v6 i1 l/ v waituntil <condition> prio <integer expression>;3 A& k S# }# _8 x* I1 N( a# [
2 e. U7 e: ^3 |: y6 E- a Y4 A9 L* e+ z/ `1 Q. ?
以上为常用的函数!
6 H% U3 { c- Z l, p' R: s3 w) W还有很多,如有需要我把资料发到你邮箱里 # N F( {5 w. x7 s6 p
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