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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* :::::::: */
/* ft_atoi.c :+: :+: */
/* +:+ */
/* By: ksmorozo <ksmorozo@student.codam.nl> +#+ */
/* +#+ */
/* Created: 2020/11/01 12:06:30 by ksmorozo #+# #+# */
/* Updated: 2021/07/07 12:03:11 by ksmorozo ######## odam.nl */
/* */
/* ************************************************************************** */
int ft_atoi(const char *str)
{
int count;
int strtonum;
int isnegativenum;
count = 0;
strtonum = 0;
isnegativenum = 1;
while (str[count] == ' ' || str[count] == '\n' || str[count] == '\f'
|| str[count] == '\r' || str[count] == '\t' || str[count] == '\v')
count++;
if (str[count] == '-' || str[count] == '+')
{
if (str[count] == '-')
isnegativenum = -1;
count++;
}
while (str[count] >= '0' && str[count] <= '9')
{
strtonum = 10 * strtonum + (str[count] - '0');
count++;
}
if (isnegativenum == -1)
strtonum = strtonum * -1;
return (strtonum);
}