to_binary.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   bin.c                                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: carlo <ccattano@student.42Berlin.de>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/01/28 14:47:40 by carlo             #+#    #+#             */
/*   Updated: 2023/01/28 14:47:42 by carlo            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

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

int main (void)
{
	unsigned char c = 'a';
	unsigned int i = 1 << sizeof(char) * 8;
	unsigned  char *bins;

	bins = malloc(sizeof(char) * 8);
	int iter = 0;
	while (i > 0)
	{
		if(c & i)
		{
			write(1, "1",1);
			bins[iter] = '1' - 48;
			iter++;		
		}
		else
		{
			write(1, "0", 1);
			bins[iter] = '0' - 48;
			iter++;
		}
		i /= 2;
	}
	printf("\niter %d", iter);
	iter -= 1;
	printf("\n--------\n");
	iter = 0;
	while (iter <= 8)
	{
		printf("\n%i", bins[iter]);
		iter++;
	}
	printf("\n--------\n");
	printf("\nc %d", c);
}