Write the definition of a function  powerTo , which receives two parameters. The first is a  double and the second is an  int . The function returns a  double . 

 If the second parameter is negative, the function returns 0. Otherwise, it returns the value of the first parameter raised to the power of the second. 



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double powerTo(double num, int pwr)
{
	if (pwr > 0)
	{
		for (int i=1; i < pwr; i++)
		{      
			num = (num*num);      
		}    
		return num;
	}
	else {
		return 0;
	}
}