Develop a DOS program

[John Wei]

I was using SCO Sys V/386 UNIX cross development package to compile 
and link a small program.  When I run the binary under DOS, open()
failed with error message "No such file or directory".
Any comment?

--------------------------------
main(argc, argv)
	int	argc;
	char	*argv[];
{
	.
	.
	/* argv[1] is file name that I specified on command line */
	if((fd=open(argv[1], O_CREAT|O_RDWR, S_IWRITE)) < 0) {
		perror("open");
	}
	.
	.
}