ft_puthexupper.c


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// using unsigned int as a paramter to deal with with negative numbers
#include "ft_printf.h"

int	ft_puthexupper(unsigned int n)
{
	const char	hex[16] = "0123456789ABCDEF";
	int			save;
	int			remainder;
	int			counter;

	remainder = 0;
	save = 0;
	counter = 0;
	if (n > 15)
	{
		save = n;
		n /= 16;
		remainder = save - (n * 16);
		counter += ft_puthexupper(n);
		counter += write(1, &hex[remainder], 1);
	}
	else
		counter += write(1, &hex[n], 1);
	return (counter);
}