#include <iostream>

using namespace std;

​

int plusFunc(int x, int y) {

  return x + y;

}

​

int plusFunc(int x, int y, int z) {

  return x + y + z;

}

​

int main() {

  int result1 = plusFunc(3, 7);

  int result2 = plusFunc(1, 2, 3);

​

  cout << "Sum of 2 numbers: " << result1 << "\n";

  cout << "Sum of 3 numbers: " << result2;

  return 0;

}

​