Returning a reference : reference « Data Types « C++ Tutorial

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C++ Tutorial » Data Types » reference

2.32.6.Returning a reference

#include <iostream> 

using namespace std; 

 

double &f(); 

 

double val = 100.0; 

 

int main() 

{ 

  double x; 

 

  cout << f() << '\n'; 

 

  x = f();           // assign value of val to x 

  cout << x << '\n'; 

 

  return 0; 

} 

 

double &f() 

{ 

  return val; // return reference to val 

}

100
100

2.32.reference
	2.32.1.	Creating and Using References
	2.32.2.	Use References operator &
	2.32.3.	References must be initialized
	2.32.4.	Change reference value
	2.32.5.	Reassigning a reference
	2.32.6.	Returning a reference
	2.32.7.	Assign value to a reference-return
	2.32.8.	Return a reference to an array element.
	2.32.9.	Use an independent reference.
	2.32.10.	class for counted reference semantics
	2.32.11.	Use reference to swap value
	2.32.12.	constant references
	2.32.13.	Use reference as a return type

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