#include <stdlib.h>
#include <iostream>
#include <bitset>

/**
 * Written by joe after feeling embarrased about the usage of & to find if
 * a bit 'n' was 1 or 0.
 **/

int main(int argc, char *argv[])
{
	if(argc<3) // If the number of args is less than 3 then there were not enough expected args.
	{
        printf("\nPlease enter both an int and a [0-7] value to check that bit.");
		exit(1); // Crash!
	}

	int BINARY_NUM = atoi(argv[1]); // Store that binary number (use ascci to int)
	int BIT = atoi(argv[2]); // What bit to check

	if(BINARY_NUM>254 || BIT>7)
	{
		printf("\nOne of your numbers was not formatted correctly, or out of range.");
		exit(1); // Crash!
	}

	// Check the bit using <<
	// Compares the number binary num using &, 1<<BIT should make a num like 0000 1000
	if(BINARY_NUM & (1<<BIT))
	{
		printf("Bit number %d is SET in number %d.\n",BIT,BINARY_NUM);
	}
	else
	{
		printf("Bit number %d is not SET in number %d.\n",BIT,BINARY_NUM);
	}
	std::cout << "BIN = " << std::bitset<8>(BINARY_NUM)  << std::endl;	// Send the bitset to cout
	std::cout << "BIT = " << std::bitset<8>(BIT)  << std::endl;		// Send the bitset to cout
	return 0;
}