Level: 2 | ft_atoi.c | print_bits.c

ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: exam <marvin@42.fr>                        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/08/21 18:09:18 by exam              #+#    #+#             */
/*   Updated: 2015/08/21 18:39:30 by exam             ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int		ft_atoi(const char *str)
{
	int i;
	int nbr;
	int negative;

	nbr = 0;
	negative = 0;
	i = 0;
	while ((str[i] == '\n') || (str[i] == '\t') || (str[i] == '\v') ||
			(str[i] == ' ') || (str[i] == '\f') || (str[i] == '\r'))
		i++;
	if (str[i] == '-')
		negative = 1;
	if (str[i] == '+' || str[i] == '-')
		i++;
	while (str[i] && (str[i] >= '0') && (str[i] <= '9'))
	{
		nbr *= 10;
		nbr += (int)str[i] - '0';
		i++;
	}
	if (negative == 1)
		return (-nbr);
	else
		return (nbr);
}

/*
Assignment name  : ft_atoi
Expected files   : ft_atoi.c
Allowed functions: None
--------------------------------------------------------------------------------

Write a function that converts the string argument str to an integer (type int)
and returns it.

It works much like the standard atoi(const char *str) function, see the man.

Your function must be declared as follows:

int	ft_atoi(const char *str);
*/

print_bits.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   print_bits.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: exam <marvin@42.fr>                        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/08/21 17:33:04 by exam              #+#    #+#             */
/*   Updated: 2015/08/21 18:02:01 by exam             ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <unistd.h>

void	print_bits(unsigned char octet)
{
	int		i;
	char	c;

	i = 128;
	while (i > 0)
	{
		if (octet < i)
		{
			c = '0';
			i = i / 2;
			write(1, &c, 1);
		}
		else
		{
			c = '1';
			write(1, &c, 1);
			octet = octet - i;
			i = i / 2;
		}
	}
}

/*
Assignment name  : print_bits
Expected files   : print_bits.c
Allowed functions: write
--------------------------------------------------------------------------------

Scrieti o functie care primeste un byte si afiseaza byte-ul in binar FARA LINIE NOUA LA SFARSTI.

Functia trebuie declarata ca si mai jos:

void	print_bits(unsigned char octet);

Exemplu, daca trimiteti 2 functiei print_bits, va afisa "00000010"
*/