The GNU Fortran Compiler: FGET

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### 8.106 `FGET` — Read a single character in stream mode from stdin

Description:

  Read a single character in stream mode from stdin by bypassing normal formatted output. Stream I/O should not be mixed with normal record-oriented (formatted or unformatted) I/O on the same unit; the results are unpredictable.

  This intrinsic is provided in both subroutine and function forms; however, only one form can be used in any given program unit.

  Note that the `FGET` intrinsic is provided for backwards compatibility with `g77`. GNU Fortran provides the Fortran 2003 Stream facility. Programmers should consider the use of new stream IO feature in new code for future portability. See also Fortran 2003 status.

Standard:

  GNU extension

Class:

  Subroutine, function

Syntax:

  `CALL FGET(C [, STATUS])`
  `STATUS = FGET(C)`

Arguments:

  C | The type shall be `CHARACTER` and of default kind.
  STATUS | (Optional) status flag of type `INTEGER`. Returns 0 on success, -1 on end-of-file, and a system specific positive error code otherwise.

Example:

      PROGRAM test_fget
        INTEGER, PARAMETER :: strlen = 100
        INTEGER :: status, i = 1
        CHARACTER(len=strlen) :: str = ""

        WRITE (*,*) 'Enter text:'
        DO
          CALL fget(str(i:i), status)
          if (status /= 0 .OR. i > strlen) exit
          i = i + 1
        END DO
        WRITE (*,*) TRIM(str)
      END PROGRAM

See also:

  FGETC, FPUT, FPUTC