file-io - Fortran OPEN(25 ,“file.txt”，iostat = stat)中的语法错误

Question

在Fortran(代码:块IDE)中执行以下代码时，编译时错误。

PROGRAM file
IMPLICIT NONE
INTEGER stat
OPEN(25,"file.dat",iostat=stat)
IF(stat==0) THEN
  print *, "File read complete"
ELSE
   PRINT *, "Err.."
END IF
END PROGRAM file

输出:

/home/file.f90|7|Error: Syntax error in OPEN statement

Answer 1

该声明:
OPEN(25,"file.dat",iostat=stat)不正确，应显示为:OPEN(25,FILE="file.dat",iostat=stat)
从标准:

Syntax of the OPEN statement

R1204 open-stmt is OPEN ( connect-spec-list )

R1205 connect-spec is [ UNIT = ] file-unit-number
  or ACCESS = scalar-default-char-expr
  or ACTION = scalar-default-char-expr
  or ASYNCHRONOUS = scalar-default-char-expr
  or BLANK = scalar-default-char-expr
  or DECIMAL = scalar-default-char-expr
  or DELIM = scalar-default-char-expr
  or ENCODING = scalar-default-char-expr
  or ERR = label
  or FILE = file-name-expr
  or FORM = scalar-default-char-expr
  or IOMSG = iomsg-variable
  or IOSTAT = stat-variable
  or NEWUNIT = scalar-int-variable
  or PAD = scalar-default-char-expr
  or POSITION = scalar-default-char-expr
  or RECL = scalar-int-expr
  or ROUND = scalar-default-char-expr
  or SIGN = scalar-default-char-expr
  or STATUS = scalar-default-char-expr