Libft/ft_atoi.c at main · GustaDNS/Libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gudaniel <gudaniel@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/04/09 13:54:48 by gudaniel          #+#    #+#             */
/*   Updated: 2024/04/09 13:54:54 by gudaniel         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_atoi(const char *s)
{
	int		sign;
	long	r;

	r = 0;
	sign = 1;
	while (*s == 32 || (*s >= 9 && *s <= 13))
		s++;
	if (*s == '-' || *s == '+')
	{
		if (*s == '-')
			sign = -1;
		s++;
	}
	while (*s >= '0' && *s <= '9')
	{
		r = r * 10 + *s - '0';
		s++;
	}
	return (sign * (int)r);
}
/* int	main()
{
	printf("%d", ft_atoi("      -1234ab56"));
	return(0);
} */