ft_printf/ft_printf_utils.c at master · erigolon/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_printf_utils.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: erigolon <erigolon@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/04/26 11:50:33 by erigolon          #+#    #+#             */
/*   Updated: 2023/04/26 12:19:52 by erigolon         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

int	ft_putcharf(char c)
{
	write(1, &c, 1);
	return (1);
}

size_t	ft_strlen(const char *s)
{
	size_t	count;

	count = 0;
	while (s[count] != '\0')
		count++;
	return (count);
}

int	ft_putstrf(char *str)
{
	int	i;

	if (!str)
	{
		write(1, "(null)", 6);
		return (6);
	}
	i = 0;
	while (str[i])
	{
		ft_putcharf(str[i]);
		i++;
	}
	return (i);
}

int	num_len(int n)
{
	int	len;

	len = 0;
	if (n <= 0)
		len++;
	while (n)
	{
		n = n / 10;
		len++;
	}
	return (len);
}

char	*ft_itoa(int n)
{
	char		*str;
	int			len;
	long int	nb;

	nb = n;
	len = num_len(nb);
	str = (char *)malloc(len + 1);
	if (!str)
		return (0);
	str[0] = '0';
	str[len] = '\0';
	if (nb < 0)
	{
		str[0] = '-';
		nb = nb * -1;
	}
	while (nb > 0)
	{
		len--;
		str[len] = nb % 10 + 48;
		nb = nb / 10;
	}
	return (str);
}