newlib-cygwin/winsup/mingw/samples/fmode/all.c

50 lines
1.1 KiB
C

/*
* A sample program demonstrating how to use _CRT_fmode to change the default
* file opening mode to binary AND change stdin, stdout and stderr. Redirect
* stdout to a file from the command line to see the difference.
*
* Also try directing a file into stdin. If you type into stdin you will get
* \r\n at the end of every line... unlike UNIX. But at least if you
* redirect a file in you will get exactly the characters in the file as input.
*
* THIS CODE IS IN THE PUBLIC DOMAIN.
*
* Colin Peters <colin@fu.is.saga-u.ac.jp>
*/
#include <stdio.h>
#include <stdlib.h> /* _fmode */
#include <fcntl.h> /* _O_BINARY */
#include <io.h> /* _setmode */
unsigned int _CRT_fmode = _O_BINARY;
main ()
{
char* sz = "This is line one.\nThis is line two.\n";
FILE* fp;
int c;
printf (sz);
/* Note how this fopen does NOT indicate "wb" to open the file in
* binary mode. */
fp = fopen ("all.out", "w");
fprintf (fp, sz);
fclose (fp);
if (_isatty (_fileno(stdin)))
{
fprintf (stderr, "Waiting for input, press Ctrl-Z to finish.\n");
}
while ((c = fgetc(stdin)) != EOF)
{
printf ("\'%c\' %02X\n", (char) c, c);
}
}