how to do exponentiation in c++ code example

Example: exponents c++

pow(base, exponent); //must #include <cmath> to use pow()

example: 

#include <iostream>
#include <cmath> //must include this library

int main ()
{
  	int y; 
	int x =10; 
  	y = pow(x,2); // y = x^2
}