ft_is_num.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_is_num.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rmikhayl <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/05/15 14:49:25 by rmikhayl          #+#    #+#             */
/*   Updated: 2024/05/15 14:49:27 by rmikhayl         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "libft.h"
 
int ft_is_num(const char *n)
{
    unsigned long   i;
 
    i = 0;
    while (n[i] && (n[i] == '\t' || n[i] == '\n' || n[i] == '\v'
            || n[i] == '\f' || n[i] == '\r' || n[i] == ' '))
        i++;
    if (n[i] && (n[i] == '+' || n[i] == '-'))
        i++;
    if (!n[i])
        return (FALSE);
    while (n[i])
    {
        if (!ft_isdigit(n[i]))
            return (FALSE);
        i++;
    }
    return (TRUE);
}