Re: [問題] 一個運算子多載的問題

[new052 (洞伍兩)]

#include <iostream>

using namespace std;

class Array
{
  int size;
  int *data;
public:
  Array(int s)
  {
    size=(s>0?s:10);
    data=new int[size];
  }
  virtual ~Array()
  {
    delete[] data;
  }
  Array(const Array& other)
  {
    int i;
    this->size = other.size;
    this->data = new int[this->size];
    for(i=0; i<this->size; ++i)
    {
      this->data[i] = other.data[i];
    }
  }
  Array& operator=(const Array &right)
  {
    int i;
    for(i=0;i<this->size;i++)
    {
      this->data[i]=right.data[i];
    }
    return *this;
  }
  const Array operator+(const Array &op2) const
  {
    Array result(this->size);
    int i;
    for(i=0;i<size;i++)
    {
      result.data[i]=this->data[i]+op2.data[i];
    }
    return result;
  }
  const Array operator*(int k) const
  {
    Array result(this->size);
    int i;
    for(int i=0;i<size;i++)
    {
      result.data[i]=this->data[i]*k;
    }
    return result;
  }
  friend istream& operator>>(istream&, Array&);
  friend ostream& operator<<(ostream&, const Array&);
};
ostream& operator<<(ostream& out, const Array& a)
{
  int i;
  int size_1 = a.size-1;
  for(i=0; i<size_1; ++i)
  {
    out << a.data[i] << " ";
  }
  out << a.data[i];
  return out;
}
istream& operator>>(istream& in, Array& a)
{
  int i;
  for(i=0; i<a.size; ++i)
  {
    in >> a.data[i];
  }
  return in;
}
int main(int argc, char *argv[])
{
  Array X(10);
  Array Y(10);
  Array Z(10);
  cout << "Input array x:";
  cin >> X;
  cout << "Input array y:";
  cin >> Y;
  Z=(X+Y)*2;
  cout << "Array z:";
  cout << Z << endl;
  return EXIT_SUCCESS;
}

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