libft/ft_strmapi.c at main · wis-aerrajiy/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strmapi.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aerrajiy <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/12 20:57:06 by aerrajiy          #+#    #+#             */
/*   Updated: 2022/10/18 22:38:18 by aerrajiy         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	f(unsigned int i, char c)
{
	return (c - i);
}

char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
{
	char	*new;
	int		i;

	if (!s)
		return (NULL);
	new = malloc(sizeof(char) * (ft_strlen(s) + 1));
	if (new != NULL)
	{
		i = 0;
		while (s[i] != '\0')
		{
			new[i] = (*f)(i, s[i]);
			i++;
		}
		new[i] = '\0';
	}
	return (new);
}