行被截断，参数列表中的语法错误 [英] Line truncated, Syntax error in argument list

问题描述

当我编译下面的程序时，在 call Coor_Trans 命令行中出现错误和警告

When I compile the program below, I have an error and a warning in the call Coor_Trans command line as

警告:行被截断

错误:参数列表中的语法错误

Error: Syntax error in argument list

我编译了好几次程序，但还是不行.可能我的调用命令有问题.

I compile the program several times, but it does not work. Maybe there is something wrong with my call command.

program 3D
    
      implicit none
      integer :: i,j,k
      integer, parameter :: FN=2,FML=5,FMH=5
      integer, parameter :: NBE=FN*FML*FMH
      real, parameter :: pi = 4*atan(1.0)
      real(kind=4), dimension(1:FN,1:FML+1,1:FMH+1) :: BEXL,BEYL,BEZL
      real(kind=4), dimension(1:FN,1:FML,1:FMH) :: BEXC,BEYC,BEZC,BE2A,BE2B,ANGLE
      real(kind=4), dimension(1:NBE,1:1,1:1) :: BEXC1,BEYC1,BEZC1,BE2A1,BE2B1,ANGLE1
      real(kind=4), dimension(1:NBE,1:NBE) :: LOC_PTS1,LOC_PTS2,LOC_PTS3
      real :: LOC_1,LOC_2,LOC_3
    
      do i=1,FN
        do j=1,FML
           do k=1,FMH
    
            BEXC(i,j,k) = 0.5*(BEXL(i,j,k) + BEXL(i,j+1,k))
            BEYC(i,j,k) = 0.5*(BEYL(i,j,k) + BEYL(i,j+1,k))
            BEZC(i,j,k) = 0.5*(BEZL(i,j,k) + BEZL(i,j,k+1))
            BE2A(i,j,k) = FL(i)/FML + j*0 + k*0
            BE2B(i,j,k) = FH(i)/FMH + j*0 + k*0
            ANGLE(i,j,k) = BETA(i) + j*0 + k*0
    
           end do
        end do
      end do
    
      BEXC1 = reshape(BEXC,(/NBE,1,1/))
      BEYC1 = reshape(BEYC,(/NBE,1,1/))
      BEZC1 = reshape(BEZC,(/NBE,1,1/))
      BE2A1 = reshape(BE2A,(/NBE,1,1/))
      BE2B1 = reshape(BE2B,(/NBE,1,1/))
      ANGLE1 = reshape(ANGLE,(/NBE,1,1/))
    
      do i=1,NBE
        do j=1,NBE

            call Coor_Trans(BEXC1(i,1,1),BEYC1(i,1,1),BEZC1(i,1,1),BEXC1(j,1,1),BEYC1(j,1,1),BEZC1(j,1,1),ANGLE1(j,1,1),LOC_1,LOC_2,LOC_3)
            LOC_PTS1(i,j) = LOC_1
            LOC_PTS2(i,j) = LOC_2
            LOC_PTS3(i,j) = LOC_3
    
        end do
      end do
    
    end program 3D

      subroutine Coor_Trans(GLOB_PTSX1,GLOB_PTSY1,GLOB_PTSZ1,GLOB_PTSX2,GLOB_PTSY2,GLOB_PTSZ2,BETA,LOC_PTS1,LOC_PTS2,LOC_PTS3)
    
      implicit none
      real(kind=4), intent(in) :: GLOB_PTSX1,GLOB_PTSY1,GLOB_PTSZ1,GLOB_PTSX2,GLOB_PTSY2,GLOB_PTSZ2,BETA
      real(kind=4), intent(out) :: LOC_PTS1,LOC_PTS2,LOC_PTS3
      real, parameter :: pi = 4*atan(1.0)
      real :: E1,E2
      E1 = cos(BETA/180*pi)
      E2 = sin(BETA/180*pi)
      LOC_PTS1 = (GLOB_PTSX1-GLOB_PTSX2)*E1 + (GLOB_PTSY1-GLOB_PTSY2)*E2
      LOC_PTS2 = (GLOB_PTSZ1-GLOB_PTSZ2)
      LOC_PTS3 = -(GLOB_PTSX1-GLOB_PTSX2)*E2 + (GLOB_PTSY1-GLOB_PTSY2)*E1
      !return
    
      end subroutine Coor_Trans

推荐答案

call 语句的length 太长.线条的默认最大宽度为 132.

The length of your call statement is too long. The default maximum width of a line is 132.

编译器将截断该宽度的输入行[就像它所做的那样——并在警告中这么说].之后，您有一个不完整的行(例如，call foo(a,b 缺少结束 ))生成了第二条警告消息.

The compiler will truncate input lines at that width [as it did--and said so with the warning]. After that, you had an incomplete line (e.g. call foo(a,b that was missing the closing )) which generated the second warning message.

最好的解决办法是用一个continuation字符来打断长行，即&:

The best solution is to break up the long line with a continuation character, namely &:

            call Coor_Trans(BEXC1(i,1,1),BEYC1(i,1,1),BEZC1(i,1,1), &
                            BEXC1(j,1,1),BEYC1(j,1,1),BEZC1(j,1,1), &
                            ANGLE1(j,1,1),LOC_1,LOC_2,LOC_3)

大多数 C 风格指南建议将行保持在 <= 80 个字符.IMO，即使使用 fortran，这也是一个很好的做法.

Most C-style guides recommend keeping lines at <= 80 chars. IMO, that's a good practice even with fortran.

注意，对于 GNU fortran，您可以使用 -ffree-line-length-<n> 命令行选项来增加限制.所以，你可以试试-ffree-line-length-512，但是，我会继续上面的操作

Note, with GNU fortran, you can increase the limit with the -ffree-line-length-<n> command line option. So, you could try -ffree-line-length-512, but, I'd do the continuation above

历史脚注: 132 列是高速、链条驱动、链轮进纸、折叠纸、行式打印机可以打印的最大宽度.

Historical footnote: 132 columns was the maximum width that a high speed, chain driven, sprocket feed, fanfold paper, line printer could print.

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