holbertonschool-printf/function3.c at main · Mahdi3Bani/holbertonschool-printf · GitHub

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#include "main.h"

/**
 * hexa - prints in hexadecimal form in lowercase.
 * @n: unsigned ling int
 * Return: j
 */
int hexa(unsigned int n)
{
	unsigned int a[1024];
	int i = 0, j = 0;
	char p;

	if (n < 1)
	{
		putchar('0');
		return (1);
	}
	for (i = 0; n > 0; i++, j++)
	{
		a[j] = n % 16;
		n = n / 16;
		if (a[j] > 10)
			a[i] = a[j] + 39;
		else
			a[i] = a[j];
	}
	for (i = j - 1; i >= 0; i--)
	{
		p = a[i] + '0';
		putchar(p);
	}
	return (j);
}

/**
 * ppntr - print pointer
 * @arg: arg
 * Return: length
 */
int ppntr(va_list arg)
{

	unsigned long int n = va_arg(arg, unsigned long int);
	int len = 0;

	putchar('0');
	putchar('x');
	len += hexa(n);
	len = len + 2;
	return (len);
}


/**
 * prevs - print reversed string
 * @arg: arg
 * Return: len
 */
int prevs(va_list arg)
{
int i = 0;
	char *s = va_arg(arg, char *);

	if (s == NULL)
	{
		s = "(null)";
	while (s[i] != '\0')
	{
		putchar(s[i]);
		i++;
	}
	}
	else
	{
		for (i = strlen(s) - 1; i >= 0; i--)
			putchar(s[i]);
	}
	return (strlen(s));
}

int proot(va_list arg)
{
	char *s = va_arg(arg, char *);
	int i, j, count = 0;
	char code[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
	char encode[] = "NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm";

	for (i = 0; s[i] != '\0'; i++)
	{
		j = 0;
		while ((code[j] != '\0') && (s[i] != code[j]))
		{
			j++;
		}
		if (s[i] == code[j])
		{
			putchar(encode[j]);
			count++;
		}
		else if (code[j] == '\0')
		{
			putchar(s[i]);
			count++;
		}
	}
	return (count);
}