Function: reference version and pointer version

#include <iostream>
using namespace std;

void referenceVersion(int &i); // reference version
void pointerVersion(int *i); // pointer version

int main()
{
  int i = 10;
  int j = 20;

  referenceVersion(i);
  pointerVersion(&j);

  cout << i << ' ' << j << '\n';

  return 0;
}

// using a reference parameter
void referenceVersion(int &i)
{  
  i = -i;
}

// using a pointer parameter
void pointerVersion(int *i)
{
  *i = - *i;
}

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3.	Function uses two arguments
4.	Passing Arguments by Reference
5.	Passes the variable to be doubled by reference
6.	Passed by value and passed by reference
7.	Pass string (char *) into a function
8.	Demonstrates the use of return values with reference type.
9.	Expressions with reference type exemplified by string assignments.

Function: reference version and pointer version : Function Parameters « Function « C++

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