print_p.c

#include "main.h"
#include <stdio.h>

/**
 * print_p - Prints a pointer argument in hexadecimal format
 * @args: The va_list arguments.
 *
 * Return: The number of characters printed.
 */

int print_p(va_list args)
{
	int count;
	void *ptr;
	char *str = "(null)";
	int i;
	unsigned long int address = va_arg(args, unsigned long int);

	ptr = va_arg(args, void*);

	if (ptr == NULL)
	{
		for (i = 0; str[i] != '\0'; i++)
		{
			_putchar(str[i]);
		}
		return (i);
	}

	address = (unsigned long int)ptr;
	_putchar('0');
	_putchar('x');

	count = print_X(address);

	return (count + 2);
}

/**
 * print_X - Prints an unsigned long integer in hexadecimal format (uppercase)
 * @n: Unsigned long integer to be printed.
 *
 * Return: Number of characters printed.
 */

int print_X(unsigned long int n)
{
	int i;
	int count;
	unsigned int a = n;

	int *array;

	count = 0;

	while (n / 16 != 0)
	{
		n /= 16;
		count++;
	}
	array = malloc(count * sizeof(int));

	for (i = 0; i < count; i++)
	{
		array[i] = a % 16;
		a /= 16;
	}
	for (i = count - 1; i >= 0; i--)
	{
		if (array[i] > 9)
		{
			array[i] += 7;
		}
	_putchar(array[i] + '0');
	}

	free(array);
	return (count);
}