fterm

fterm

Terminal File Test

Portability: SAS/C extension

SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <lcio.h>

int fterm(FILE *f);

DESCRIPTION

fterm returns an indication of whether or not the stream associated with the FILE object addressed by f is assigned to an interactive terminal.

fattr contains the functionality of fterm in addition to other capabilities and is a better choice in most cases.

RETURN VALUE

fterm returns 0 for a nonterminal FILE . The fterm function returns a nonzero value if the FILE is assigned to a TSO, CMS, or USS terminal.

EXAMPLE

#include <lcio.h>
#include <stdio.h>

main()
{
   int k;
   k = fterm(stdout);

   if (k == 0)
      puts("File 'stdout' is not assigned to an interactive " 
              "terminal.");
   else
      puts("File 'stdout' is assigned to an interactive terminal.");
}

RELATED FUNCTIONS

fattr , fopen , isatty