function in a namespace reference variables in the same namespace : namespace « Language Basics « C++ Tutorial

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C++ Tutorial » Language Basics » namespace

1.9.9.function in a namespace reference variables in the same namespace

#include <iostream>

using namespace std;



int integer1 = 98;



namespace Example

{

   const double PI = 3.14159;

   void printValues();



   namespace Inner

   {

      enum Years { FISCAL1 = 1990, FISCAL2, a };

   }

}



namespace

{

   double doubleInUnnamed = 88.22;

}



int main()

{

   Example::printValues();

   return 0;

}

void Example::printValues()

{

   cout << integer1 << "\n(global) integer1 = " << ::integer1

      << "\nIinteger1 = " << Inner::a << endl;

}

98
(global) integer1 = 98
Iinteger1 = 1992

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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