int ispwrof2(int num)
{
	int temp = 0;
	if(num <= 0)
		return 0;
	else if(num > 0)
	{
		while(num%2 == 0)
		{
			temp = num/2;
			num = temp;

		}

	 }
	 if(num == 1)
		return 1;
	 else
		return 0;
}