Reference Parameters That Are Pointers

• Sometimes a function needs to change a pointer parameter so that the pointer points to a new location.

Void allocate_doubles(double*& p, size_t& n)

{

cout << “How many doubles should I allocate?\n”;

cout << “Please type a positive integer\n”;

cin >> n;

p = new double[n]; // Allocate the array of n doubles.

}

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