constructor & Scope resolution operator in c++

C++ constructor example

#include 

#include  

class Game 

{

 private:

int goals;

public:

  Game() 

{

    goals = 0;

  }

  int getGoals()

 {

    return goals;

  }

  void incrementGoal()

{

    goals++;

  }

};

int main()

 {

  Game football;

  cout << "Number of goals when game is started = " << football.getGoals() << endl;

  football.incrementGoal();

  football.incrementGoal();

  cout << "Number of goals a little later = " << football.getGoals() << endl;

  return 0;

}

C++ new operator example

#include 

 #include  

int main()

{

   int n, *pointer, c;

   cout << "Enter an integer\n";

   cin >> n;

   pointer = new int[n];

   cout << "Enter " << n << " integers\n";

   for ( c = 0 ; c < n ; c++ )

      cin >> pointer[c];

   cout << "Elements entered by you are\n";

   for ( c = 0 ; c < n ; c++ )

      cout << pointer[c] << endl;

   delete[] pointer;

   return 0;

}

Scope resolution operator in c++

#include 

#include  

class programming 

{

public:

  void output();  

};

void programming::output() 

{

  cout << "Function defined outside the class.\n";

}

int main() 

{

  programming x;

  x.output();

  return 0;

}