random dice generator C++

How can i modify my program so it has a single parameter representing the number of dice to be rolled instead of automatically rolling two dice? This is my code so far.

#include <cstdlib>
#include <iostream>

using namespace std;

int dice_score()
{

  srand(time(NULL));
  int roll1 = rand() % 6 + 1;
  int roll2 = rand() % 6 + 1;
  return roll1;
  return roll2;

}