FGETC — Read a single character in stream mode#

FGETC(UNIT, C)#

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.

Parameters:

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.

Standard:

GNU extension

Class:

Subroutine, function

Syntax:

CALL FGETC(UNIT, C [, STATUS])
STATUS = FGETC(UNIT, C)

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