text: #include <stdlib.h>
  #include <unistd.h>
  #include "../../../libft.h"
  
  void	ft_print_result(char const *s)
  {
  	int		len;
  
  	len = 0;
  	while (s[len])
  		len++;
  	write(1, s, len);
  }
  
  int		main(int argc, const char *argv[])
  {
  	const char	*str;
  	int			arg;
  
  	if (argc == 1)
  		return (0);
  	else if ((arg = atoi(argv[1])) == 1)
  	{
  		if (!(str = ft_strcasestr("lorEm ipsum dolor sit amet", "loRem")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 2)
  	{
  		if (!(str = ft_strcasestr("lorem iPsum dolor sit amet", "iPSum")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 3)
  	{
  		if (!(str = ft_strcasestr("lorem iPSum dolor sit lorem ipsum dolor", "ipsum")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 4)
  	{
  		if (!(str = ft_strcasestr("lorem ipsum dolor sit amet", "")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 5)
  	{
  		if (!(str = ft_strcasestr("lorem ipsum dolor sit amet", "ipSUmm")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 6)
  	{
  		if (!(str = ft_strcasestr("lorem ipsum dolor sit amet", "dOl")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	else if (arg == 7)
  	{
  		if (!(str = ft_strcasestr("lorem ipsum dolor sit amet", "consECtetur")))
  			ft_print_result("NULL");
  		else
  			ft_print_result(str);
  	}
  	return (0);
  }
  