The GNU Fortran Compiler: FGETC

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### 9.99 `FGETC` — Read a single character in stream mode

Description:

  Read a single character in stream mode 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 FGETC(UNIT, C [, STATUS])`
  `STATUS = FGETC(UNIT, C)`

Arguments:

  UNIT | The type shall be `INTEGER`.
  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_fgetc
        INTEGER :: fd = 42, status
        CHARACTER :: c

        OPEN(UNIT=fd, FILE="/etc/passwd", ACTION="READ", STATUS = "OLD")
        DO
          CALL fgetc(fd, c, status)
          IF (status /= 0) EXIT
          call fput(c)
        END DO
        CLOSE(UNIT=fd)
      END PROGRAM

See also:

  FGET, FPUT, FPUTC