#include <stdio.h>#include <htc.h>/* A simple demonstration of serial communications which * uses the bit-banging implementation of a serial communications. * Useful for PIC16Cxxx series of devices, or if USART is already * in use. */void main(void){	unsigned char input;	INTCON=0;	// purpose of disabling the interrupts.	printf("\rPress a key and I will echo it back:\n");	while(1){		input = getch();	// read a response from the user		printf("\rI detected [%c]",input);	// echo it back	}}