// Initializes a const reference with a rvalue.

#include <iostream>
#include <string>
#include <cmath>

typedef int T;

int main(){
  using namespace std;

  double expression = 5.3;

  const T &var = expression;  // var becomes a reference to a rvalue 
                              // via a temporary variable.

  cout << var << endl;        // 5
}