char *ft_itoa(int n)
{
char *str;
int len;
int s;
len = ft_nblen(n);
s = ft_sign(n);
if (!(str = (char *)malloc(sizeof(char) * (len + s + 1))))
return (NULL);
else
{
str = str + len + s;
*str = '\0';
if (n == 0)
*--str = 48;
while (n)
{
*--str = ft_abs(n % 10) + 48;
n = n / 10;
}
if (s)
*--str = '-';
}
return (str);
}
int ft_atoi(const char *s)
{
int sign;
int i;
sign = 1;
i = 0;
while (s[i] == '\n' || s[i] == '\v' || s[i] == '\t'
|| s[i] == '\r' || s[i] == '\f' || s[i] == ' ')
i++;
if (!(s[i] >= '0' && s[i] <= '9') && s[i] != '-' && s[i] != '+')
return (0);
if (ft_isdigit(s[i]))
return (ft_sign(s, i, sign));
if (s[i] == '+' && ft_isdigit(s[i + 1]))
return (ft_sign(s, (i + 1), sign));
if (s[i] == '-' && ft_isdigit(s[i + 1]))
{
sign = -1;
return (ft_sign(s, (i + 1), sign));
}
return (0);
}