libft/ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/16 16:06:11 by kcolin            #+#    #+#             */
/*   Updated: 2024/10/18 17:58:42 by kcolin           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_isspace(char c)
{
	if (c == ' '
		|| c == '\f'
		|| c == '\n'
		|| c == '\r'
		|| c == '\t'
		|| c == '\v')
		return (1);
	else
		return (0);
}

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

	result = 0;
	i = 0;
	while (ft_isspace(nptr[i]))
		i++;
	while (ft_isdigit(nptr[i]))
	{
		result *= 10;
		result += nptr[i] - '0';
		i++;
	}
	return (result);
}

/*
#include <stdlib.h>
#include <stdio.h>

int	main(int argc, char **argv)
{
	if (argc > 1)
	{
		printf("mine: %d\nlib:  %d\n",
			ft_atoi(argv[1]),
			atoi(argv[1]));
	}
	return (0);
}
*/