我想能不能先做一个变量p% ~: d! G4 |; x5 C
let p random-float 1.0 7 W+ c5 b6 w1 r( \8 z7 [3 ~ifelse (p< a*b) 3 a. i1 L, N: V1 M; T
[# V+ }: j( `2 S z. s% w
set pcolor white 2 [# a# z' V5 T- G. f ] 7 j( \9 X2 f1 R( \, [
[9 A$ p2 [: _) i$ c' L" a3 g# K
set pcolor red ( }5 }. k2 W. b- o) B ] ' R$ d: ?7 R1 m' G0 d) [呵呵,不知道行不行' n# I) G0 D) Y% m3 ]/ H0 _! G4 d
# H9 s+ |9 ]0 P* j4 C# J9 B8 s/ C. V
% j1 Y2 k: H% B- B+ A ?3 I# u& ~. p 2#jingkun522