ft_strmapi.c File Reference

#include "../includes/libft.h"

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Functions
char *	ft_strmapi (char const *s, char(*f)(unsigned int, char))
	Maps a function over a string into a new allocated string.

Function Documentation

ft_strmapi()

char * ft_strmapi	(	char const *	s,
		char(*)(unsigned int, char)	f
	)

Maps a function over a string into a new allocated string.

Parameters

s	Input string.
f	Mapping callback receiving index and character.

Returns

Newly allocated mapped string, or NULL on failure.

Definition at line 22 of file ft_strmapi.c.

{
    char            *str;
    unsigned int    i;
    size_t          len;
 
    if (!s || !f)
        return (NULL);
    len = ft_strlen(s);
    str = (char *)malloc(sizeof(char) * (len + 1));
    if (!str)
        return (NULL);
    i = 0;
    while (s[i])
    {
        str[i] = f(i, s[i]);
        i++;
    }
    str[i] = '\0';
    return (str);
}

References ft_strlen().

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