how to find pow()%n in c++ code example

Example 1: how to write something in power of a number in c++

#include <iostream>
#include <cmath>
using namespace std;
int main(){
  cout<<pow(10,2);
  return 0;
}

Example 2: pow function c++

#include <iostream>
#include <cmath>
using namespace std;
int main(){ 
	int x = 2;
	int y = 3;
	cout<<pow(x,y); 
}