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ft_itoa.c
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ft_itoa.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ribana-b <[email protected] +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/05/06 19:46:32 by ribana-b #+# #+# */
/* Updated: 2023/05/08 02:48:40 by ribana-b ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int numlen(int n)
{
unsigned int newnum;
int cont;
if (n < 0)
{
newnum = n * -1;
}
else
{
newnum = n;
}
cont = 1;
while ((newnum / 10) > 0)
{
newnum /= 10;
cont++;
}
return (cont);
}
char *assignmalloc(int n, int bytes)
{
char *str;
if (n < 0)
{
str = (char *)malloc(bytes * sizeof(char) + 2);
}
else
{
str = (char *)malloc(bytes * sizeof(char) + 1);
}
if (!str)
{
return (0);
}
return (str);
}
char *nbrtostr(char *str, int n, int nlen)
{
unsigned int newnum;
if (n < 0)
{
newnum = n * -1;
}
else
{
newnum = n;
}
*(str + nlen) = '\0';
while (nlen--)
{
*(str + nlen) = (newnum % 10) + '0';
newnum /= 10;
}
return (str);
}
char *ft_itoa(int n)
{
char *newstr;
int nlen;
nlen = numlen(n);
newstr = assignmalloc(n, nlen);
if (!newstr)
{
return (0);
}
if (n < 0)
{
*newstr = '-';
nbrtostr(newstr + 1, n, nlen);
}
else
{
nbrtostr(newstr, n, nlen);
}
return (newstr);
}
/* //This is for testing
#include <stdio.h>
int main(void)
{
printf("%s", ft_itoa(-2147483648));
} */
/*
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RRR RRRR RRRRRR
RRR RRR RRR
RRRRRRRR RRRR
RRR RRRRR
RRR RRR
RRR RRRR
RRR RRRRR
RRRRRRRRRRRRRR
RRRR RRRR
RRRR RRR
RRRR RRR
RRR RRR RRRRR
RRRR RRRRRRRR
*/