Reuse namespace : namespace « Language Basics « C++ Tutorial

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C++ Tutorial » Language Basics » namespace

1.9.4.Reuse namespace

#include <iostream>

using namespace std;



namespace MyNamespace {

  int i;

}



namespace MyNamespace {

  int j;

}



int main()

{

  MyNamespace::i = MyNamespace::j = 10;



  // refer to MyNamespace specifically

  cout << MyNamespace::i * MyNamespace::j << "\n";



  // use MyNamespace namespace

  using namespace MyNamespace;



  cout << i * j;



  return 0;

}

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1.9.namespace
	1.9.1.	A namespace
	1.9.2.	Use a namespace
	1.9.3.	A nested namespace
	1.9.4.	Reuse namespace
	1.9.5.	Reference variables in namespaces
	1.9.6.	using namespace in program block
	1.9.7.	Reference global variable, variable in the nested namespace
	1.9.8.	Use Namespace to organize functions
	1.9.9.	function in a namespace reference variables in the same namespace
	1.9.10.	using namespace std;
	1.9.11.	Use function defined in a namespace
	1.9.12.	Using unnamed namespaces.
	1.9.13.	Using namespace aliases
	1.9.14.	Using the using directive

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