what if i want to run kbhit in background process like this, why not work proprely

[wiraredi]

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>

int kbhit(void)
{
	struct termios oldt, newt;
	int ch;
	int oldf;

	tcgetattr(STDIN_FILENO, &oldt);
	newt = oldt;
	newt.c_lflag &= ~(ICANON | ECHO);
	tcsetattr(STDIN_FILENO, TCSANOW, &newt);
	oldf = fcntl(STDIN_FILENO, F_GETFL, 0);
	fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);

	ch = getchar();

	tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
	fcntl(STDIN_FILENO, F_SETFL, oldf);

	if(ch != EOF)
	{
		ungetc(ch, stdin);
		return 1;
	}

	return 0;
}


main( int argc, char** argv )
{
	char *input = argv[0];
	int nomor = argc;
	pid_t pid = 0;
	/* set stuff up */
	/* accept command line args */
	
	pid = fork();
	if( pid == 0 ) {
		/* this is the "background" process.  Execute process loop here */
		while(1)
		{
			if(kbhit())
			{
			}	
		}
	}
	else {
		/* "foreground" process exits */
		exit(0);
	}
}