ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tcakir-y <tcakir-y@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/10 15:10:01 by tcakir-y          #+#    #+#             */
/*   Updated: 2024/10/16 19:33:31 by tcakir-y         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_atoi(const char *nptr)
{
	int	result;
	int	sign;
	int	i;

	result = 0;
	sign = 1;
	i = 0;
	while ((nptr[i] >= '\t' && nptr[i] <= '\r') || nptr[i] == ' ')
		i++;
	if (nptr[i] == '-' || nptr[i] == '+')
	{
		if (nptr[i] == '-')
			sign = -1;
		i++;
	}
	while (nptr[i] && nptr[i] >= '0' && nptr[i] <= '9')
	{
		result = (result * 10) + (nptr[i] - '0');
		i++;
	}
	return (result * sign);
}

//int	main(void)
//{
//	int	result1 = ft_atoi("-1234");
//	int	result2 = atoi("-1234");

//	printf("ft: %d\n", result1);
//	printf("function: %d", result2);
//	return (0);
//}