power function in cmath code example

Example 1: 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
}

Example 2: pow in cpp header file

#include<cmath> //header file for pow fun


   pow(a,b)    // a^b