void test(int &a,int &b)
{
     a=a+1;
     b=b+1;
}
 
int main()
{
    int c=23,d=6;
    test(c,d);
    cout<<c<<endl<<d;
cin.get();
cin.ignore();
return 0;
}

#include <iostream>
#include <string>
#include <fstream>
 
struct names {
  std::string first_name;
  std::string last_name;
};
 
names read_from_file( std::ifstream &in ) {
  names i_names;
  in >> i_names.first_name >> i_names.last_name;
 
  return i_names;
}

#include <iostream>
#include <string>
 
struct Name {
  std::string First;
  std::string Last;
 
  void operator()()
  {
    std::cin >> First >> Last;
  }
};
 
int main()
{
  Name getName;
 
  getName();
  std::cout << getName.Last << ", " << getName.First << '\n';
}

#include <utility>
#include <algorithm>
#include <tuple>
 
std::pair<int,int> min_n_max( const int* arr, std::size_t N )
{
  // invariant: N > 0
  int low = arr[0] ;
  int high = arr[0] ;
 
  for( std::size_t i=1 ; i<N ; ++i )
  {
    low = std::min( low, arr[i] ) ;
    high = std::max( high, arr[i] ) ;
  }
 
  return std::make_pair(low,high) ;
}
 
std::tuple<int,int,double> min_max_n_avg( const int* arr, std::size_t N )
{
  // invariant: N > 0
  int low = arr[0] ;
  int high = arr[0] ;
  int sum = arr[0] ;
 
  for( std::size_t i=1 ; i<N ; ++i )
  {
    low = std::min( low, arr[i] ) ;
    high = std::max( high, arr[i] ) ;
    sum += arr[i] ;
  }
 
  return std::make_tuple( low, high, sum/double(N) ) ;
}