I have this code to find the power of x^y. i already found out how to do x^y but am having trouble doing x^-y (x to the -y power) Here is my code

Can anyone please give me hints to do x to the -y power?Code:#include <iostream.h> int main() { double x,y; double sum = 1; cout << "Enter the X number : "; cin >> x; cout << "Enter the Y number : "; cin >> y; for (int a =1; a<=y; a++) { sum = sum * x; } cout << sum << endl; cin >> hold; }

Thanks.