#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int write_open(const char *pathname, mode_t mode)
{
    	int retval;
    	if((retval=open(pathname, O_WRONLY|O_CREAT|O_TRUNC, mode)==-1))
	{
		printf("ERROR, OPEN FILE FAILED!\n");
		exit(254);
    	}
    	return retval;
}
main()
{
	write_open("abc",O_CREAT);
}