Unix to Windows Porting Dictionary for HPC

header file: unistd.h

int isatty(int fd);

header file: io.h

int _isatty(int fd);

This function tests whether the file descriptor fd is associated with terminal device.

Since this function has a direct analog in Windows, the only changes that should be needed are to rename the function in your source code, and include the needed Windows header file.

#include <io.h>

if (_isatty(_fileno(stdout)))
  printf("stdout has not been redirected.");
else
  printf("stdout has been redirected.");