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Array Parameters

• If a function adds elements to an array, you need to pass the array, the maximum size, and the current size.
• The current size must be passed as a reference parameter.

  void read_data(double a[], int a_capacity, int& a_size)
  {
     a_size = 0;
     while (a_size < a_capacity)
  
     {
        double x;
        cin >> x;
        if (cin.fail()) return;
        a[a_size] = x;
        a_size++;
     }
  }
  

• Arrays cannot be function return types.
• To "return" an array, the caller of the function must provide an array parameter to hold the result.

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