// Ex5_03.cpp
// A successful attempt to modify caller arguments
#include <iostream>
using std::cout;
using std::endl;

int incr10(int* num);                // Function prototype

int main()
{
  int num { 3 };

  int* pnum { &num };                  // Pointer to num

  cout << endl << "Address passed = " << pnum;

  int result { incr10(pnum) };
  cout << endl << "incr10(pnum) = " << result;

  cout << endl << "num = " << num << endl;
  return 0;
}

// Function to increment a variable by 10
int incr10(int* num)                   // Function with pointer argument
{
  cout << endl << "Address received = " << num;

  *num += 10;                          // Increment the caller argument
                                       //  - confidently
  return *num;                         // Return the incremented value
}