Function overloading در ++C

#include <iostream>
using namespace std;

void space(int count) 
{
  for( ; count; count--) 
     cout << ' ';
}

void space(int count, char ch) 
{
  for( ; count; count--) 
     cout << ch;
}

int main()
{
  void (*functionPointer1)(int);

  void (*functionPointer2)(int, char);

  functionPointer1 = space;                  // gets address of space(int)

  functionPointer2 = space;                  // gets address of space(int, char)

  functionPointer1(22);                      
  cout << "|\n";

  functionPointer2(30, 'x');                 
  cout << "|\n";

  return 0;
}