#include <iostream>  // need this header file to support the C++ I/O system
using namespace std; // telling the compiler to use namespace "std",
// where the entire C++ library is declared.

// function declarations - needed for the program to compile
int min_ii (int n, int m);
int min_pi (int *p, int * q);
int * min_pp (int *p, int * q);

int main()
{
  int n = 6, m = 5;

  // passing two integers to a function
  int min = min_ii(n , m);
  cout << min << endl;

  // passing addresses of n and m to a function
  min = min_pi(&n, &m);
  cout << min << endl;

  // passing addresses of n and m to a function
  int * min_p = min_pp(&n, &m);
  cout << *min_p << endl;

  *min_p = *min_p - 1;
  // changing m via a pointer
  cout << m << endl;

  // call to swap GOES HERE
  cout << "m = " << m << " n = " << n << endl;

  return 0;
}

// passing pointers to functions, returning a pointer
int * min_pp (int *p, int * q) {
   // fill in the code for this function

}


// passing two integers to a function, returning an int
int min_ii (int n, int m) {
   // fill in the code for this function
}

// passing pointers to functions, returning an int
int min_pi (int *p, int * q) {
   // fill in the code for this function
}