#include "main.h"
/**
 * printf_37 - prints the char 37.
 * Return: 1.
 */
int printf_37(void)
{
	_putchar(37);
	return (1);
}

/**
 * printf_rot13 -  str to ROT13 place into buffer
 * @args:  va_arg where is allocated printf arguments
 * Return: counter
 */
int printf_rot13(va_list args)
{
	int i, j, counter = 0;
	int k = 0;
	char *s = va_arg(args, char*);
	/* basic alphabet */
	char alpha[] = {"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"};
	/* shifted by 13 */
	char beta[] = {"nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM"};

	if (s == NULL)
		s = "(null)";
	for (i = 0; s[i]; i++)
	{
		k = 0;
		for (j = 0; alpha[j] && !k; j++)
		{
			if (s[i] == alpha[j])
			{
				_putchar(beta[j]);
				counter++;
				k = 1;
			}
		}
		if (!k)
		{
			_putchar(s[i]);
			counter++;
		}
	}
	return (counter);
}

/**
 * printf_pointer - prints an hexgecimal number.
 * @val: arguments.
 * Return: counter.
 */
int printf_pointer(va_list val)
{
	void *p;
	char *s = "(nil)";
	long int a;
	int b;
	int i;

	p = va_arg(val, void*);
	if (p == NULL)
	{
		for (i = 0; s[i] != '\0'; i++)
		{
			_putchar(s[i]);
		}
		return (i);
	}

	a = (unsigned long int)p;
	_putchar('0');
	_putchar('x');
	b = printf_hex_aux(a);
	return (b + 2);
}

/**
 * printf_int - prints integer
 * @args: argument to print
 * Return: number of characters printed
 */

int printf_int(va_list args)
{
	int n = va_arg(args, int);
	int num, last = n % 10, digit, exp = 1;
	int  i = 1;

	n = n / 10;
	num = n;

	if (last < 0)
	{
		_putchar('-');
		num = -num;
		n = -n;
		last = -last;
		i++;
	}
	if (num > 0)
	{
		while (num / 10 != 0)
		{
			exp = exp * 10;
			num = num / 10;
		}
		num = n;
		while (exp > 0)
		{
			digit = num / exp;
			_putchar(digit + '0');
			num = num - (digit * exp);
			exp = exp / 10;
			i++;
		}
	}
	_putchar(last + '0');

	return (i);
}