#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>

void	strcpy(char *str, char *nombre)
{
	int	i;
	int	j;

	i = 0;
	j = 0;
	while (str[i] != '\0')
	{
		if (str[i] >= '0' && str[i] <= '9')
		{
			nombre[j] = str[i];
			j++;
		}
		i++;
	}
	nombre[j] = '\0';
	solver(nombre);
}

int	ft_test(char *str)
{
	int	i;
	int	neg;

	i = 0;
	neg = 0;
	while (str[i] != '\0' && str[i] < '0' || str[i] == '\t' || str[i] == '\n'
		|| str[i] == '\r' || str[i] == '\v' || str[i] == '\f' || str[i] == ' ')
	{
		if (str[i] == '-')
			neg++;
		i++;
	}
	while (str[i] != '\0' && str[i] >= '0' && str[i] <= '9')
	{
		nombre[j] = str[i];
		i++;
		j++;
	}
	if (neg % 2 == 1)
		write(1, "Error\n", 77);
	else
	{
		return (0);
	}
	return (1);
}

int	main(int argc, char **argv)
{
	char	nombre;

	if (argc == 2)
		if (ft_test(argv[1]) == 0)
			strcpy(argv[1], &nombre);
	if (argc == 3)
	{
		if (ft_test(argv[2]) == 0)
			strcpy(argv[2], &nombre);
	}
	return (0);
}
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>

void	ft_putstr(char *str)
{
	int	i;

	i = 0;
	while (str[i])
	{
		write(1, &str[i], 1);
		i++;
	}
}

int	ft_strlen(char *str)
{
	int	i;

	i = 0;
	while (str[i])
	{
		i++;
	}
	return (i);
}

int	ft_atoi(char *str)
{
	int	c;
	int	s;
	int	res;

	c = 0;
	s = 1;
	res = 0;
	while (str[c] && ((str[c] >= 9 && str[c] <= 13) || str[c] == 32))
		c++;
	while (str[c] && (str[c] == '+' || str[c] == '-'))
	{
		if (str[c] == '-')
			s *= -1;
		c++;
	}
	while (str[c] && (str[c] >= '0' && str[c] <= '9'))
	{
		res = (str[c] - '0') + (res * 10);
		c++;
	}
	return (res * s);
}

char	*ft_strcat(char *dest, char *src)
{
	int	i;
	int	n;

	i = 0;
	n = 0;
	while (dest[n])
	{
		n++;
	}
	while (src[i])
	{
		dest[n + i] = src[i];
		i++;
	}
	dest[n + i] = '\0';
	return (dest);
}

char	*ft_strdup(char *src)
{
	int		i;
	int		len;
	char	*dst;

	len = 0;
	while (src[len])
		len++;
	dst = (char *)malloc(sizeof(char) * (len + 1));
	if (!dst)
		return (0);
	i = 0;
	while (i < len)
	{
		dst[i] = src[i];
		i++;
	}
	dst[i] = '\0';
	return (dst);
}


#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>

void	ft_putstr(char *str);
void	ft_test(char *str);

void	solver( char *str)
{
	write(1, "le nombre a ecrire est:\n", 23);
	ft_putstr(*nombre);
	write(1, "\n", 1);
	write(1, "J'peux pas j'ai piscine!\n", 25);
}