Namespace Demo: define a namespace : NameSpace « Language « C++

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C++ » Language » NameSpaceScreenshots 
Namespace Demo: define a namespace
Namespace Demo: define a namespace
 

#include <iostream>
using namespace std;


namespace MyNameSpace {
  class demo {
    int i;
  public:
    demo(int x) { 
       i = x; 
    }
    void seti(int x) { 
       i = x; 
    }
    int geti() { 
       return i; 
    }
  };

  char str[] "Illustrating namespaces\n";
  int counter;
}

namespace SecondNamespace {
  int x, y;
}

int main()
{

  MyNameSpace::demo ob(10);              // use scope resolution

  cout << "Value of ob is : " << ob.geti();
  cout << endl;
  ob.seti(99);
  cout << "Value of ob is now : " << ob.geti();
  cout << endl;


  using MyNameSpace::str;                // bring str into current scope
  cout << str;

  using namespace MyNameSpace;           // bring all of MyNameSpace into current scope
  for(counter = 10; counter; counter--)
    cout << counter << " ";
  cout << endl;

  SecondNamespace::x = 10;                  // use SecondNamespace namespace
  SecondNamespace::y = 20;

  cout << "x, y: " << SecondNamespace:: x;
  cout << ", " << SecondNamespace::y << endl;

  using namespace SecondNamespace;          // bring another namespace into view
  demo xob(x), yob(y);

  cout << "xob, yob: " << xob.geti() << ", ";
  cout << yob.geti() << endl;

  return 0;



           
         
  
Related examples in the same category
1.Namespaces are additiveNamespaces are additive
2.Demonstrate a namespaceDemonstrate a namespace
3.Some Namespace OptionsSome Namespace Options
4.A namespace can be nested within anotherA namespace can be nested within another
5.use explicit std:: qualification.use explicit std:: qualification.
6.Using namespace to reference variables
7.Namespace code section
8.Use namespaces to wrap variables
9.Enclosure variables with namespace
10.Defines and tests namespaces.Defines and tests namespaces.
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