FGETC - The GNU Fortran Compiler
Description: The GNU Fortran Compiler

Next: FLOOR, Previous: FGET, Up: Intrinsic Procedures

### 8.85 `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