fortran程序运行时出现如图情况，求助大神，跪谢

leifei

program main

implicit none

integer i,j

real b(117,2)

open(10,file='nacadata.txt',status='old')
open(11,file='gambitdata.txt',status='old')

do i=1,117
  read(10,*) (b(i,j),j=1,2)
end do

do i=1,117
  write(11,100) (b(i,j),j=1,2)
end do

100 format("vertex create coordinates",2(f10.6,1x),"0")

end
问题见附件图

leifei

fortran程序运行过程中出现问题，file already exists

leifei

zhmeww

open(11,file='gambitdata.txt',form='formatted',status='replace')
......
......
close(10)
close(11)