Snippet #131892

#include "main.h"

/**

 * _atoi - converts a string to an integer.

 * @s: input string.

 * Return: integer.

 */

int _atoi(char *s)

{

	unsigned int count = 0, size = 0, oi = 0, pn = 1, m = 1, i;

	while (*(s + count) != '\0')

	{

		if (size > 0 && (*(s + count) < '0' || *(s + count) > '9'))

			break;

		if (*(s + count) == '-')

			pn *= -1;

		if ((*(s + count) >= '0') && (*(s + count) <= '9'))

		{

			if (size > 0)

				m *= 10;

			size++;

		}

		count++;

	}

	for (i = count - size; i < count; i++)

	{

		oi = oi + ((*(s + i) - 48) * m);

		m /= 10;

	}

	return (oi * pn);

}