嵌套循环，不报错，但是大循环只执行一次

Zhuming

为了对比两个txt，以2013.txt为准，删除2014.txt中和2013.txt不同的地方。
代码：

[Fortran] syntaxhighlighter_viewsource syntaxhighlighter_copycode

program climate
implicit none

!声明变量
real::lon,lon1
real::lat,lat1
real(kind=8)::dataa,dataa1
integer::status1=0
integer::i,j

!读取
OPEN(11,file='2013.txt',status='old')
OPEN(12,file='2014.txt',status='old')
OPEN(13,file='new2014.txt',status='replace')

do j =1,4189,1
    READ(11,*,iostat=status1)lon,lat,dataa
    if(status1/=0)exit
    do i =1,4548,1
        READ(12,*,iostat=status1)lon1,lat1,dataa1
        if(lat/=lat1.OR.lon/=lon1) cycle
            write(*,*)lon1,lat1,dataa1
            write(13,*)lon1,lat1,dataa1
        if(status1/=0)exit
    end do
end do

CLOSE(11)
CLOSE(12)
CLOSE(13)

end program climate

错误信息如图        
   

li913

[Fortran] syntaxhighlighter_viewsource syntaxhighlighter_copycode

program climate
implicit none

!声明变量
real::lon,lon1
real::lat,lat1
real(kind=8)::dataa,dataa1
integer::status1=0
integer::i,j

!读取
OPEN(11,file='2013.txt',status='old')
OPEN(12,file='2014.txt',status='old')
OPEN(13,file='new2014.txt',status='replace')

do j =1,4189,1
    READ(11,*,iostat=status1)lon,lat,dataa
    if(status1/=0)exit
    do i =1,4548,1
        READ(12,*,iostat=status1)lon1,lat1,dataa1
        if(status1/=0)exit !************************
        if(abs(lat-lat1)+abs(lon-lon1)>1.0e-6) cycle !************************
        write(*,*)lon1,lat1,dataa1
        write(13,*)lon1,lat1,dataa1
    end do
    rewind(12) !************************
end do

CLOSE(11)
CLOSE(12)
CLOSE(13)

end program climate

Zhuming

li913 发表于 2020-5-27 22:13
[mw_shl_code=fortran,true]program climate
implicit none

学到了！！感谢