binary rotational shift example

#include <stdio.h>
#include <Windows.h>

typedef int bool;
#define true 1
#define false 0

bool GetBit(unsigned char data, int bit){
	return (data >> bit) & 1 == 1;
}

//Binary right shift (rotate)
char BRS(unsigned char data){
	return (data >> 1) | (data << (8 - 1));
}

//Binary left shift (rotate)
char BLS(unsigned char data){
	return (data << 1) | (data >> (8 - 1));
}

void PrintByte(unsigned char data){
	int n;
	//left to right, least significant bit first, so this is reverse
	for (n = 7; n >= 0; n--){
		printf("%d", GetBit(data, n));
	}
}

void main(){

	int n;
	unsigned char test = 1;

	puts("BLS:");
	PrintByte(test);
	puts("\n-");
	for (n = 0; n < 8; n++){
		test = BLS(test);
		PrintByte(test);
		puts(" ");
	}

	puts("\nBRS:");

	test = 1;
	PrintByte(test);
	puts("\n-");
	for (n = 0; n < 8; n++){
		test = BRS(test);
		PrintByte(test);
		puts(" ");
	}

	unsigned long number = 0x5555555555555555;

	unsigned char * raw = &number;

	puts("\n-");

	//Read the long byte for byte backwards
	for (n = sizeof(number)-1; n >=0; n--){
		PrintByte(raw[n]);
	}

	_getch();
}