Assign value to a reference-return : reference « Data Types « C++ Tutorial






  1. C++ Tutorial
  2. Data Types
  3. reference
#include <iostream> 
using namespace std; 
 
double &f(); 
 
double val = 100.0; 
 
int main() 
{ 
  double x; 
 
  f() = 99.1;
  cout << f() << '\n';
 
  return 0; 
} 
 
double &f() 
{ 
  return val; // return reference to val 
}

99.1




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