C++习题-重载流运算符[4.5]

#include <iostream>
using namespace std;

class Matrix
{
      public:
      friend Matrix operator +(Matrix m1,Matrix m2); //定义重载函数,重载加法运算

      friend istream & operator >> (istream &,Matrix &);//定义重载函数，重载流提取运算符

      friend ostream & operator <<(ostream &,Matrix &); //定义重载函数，重载流插入运算符

      private:
      int data[2][3] ; //定义矩阵使用的数组,私有成员

       
};

istream & operator >> (istream & input,Matrix &m)
{
     int (*p)[3]; //定义指向一维数组的指针变量

     int *q; //定义int 类型指针

     for(p = m.data;p < m.data + 2;p++)
     {
           for (q = *p; q < *p + 3;q++)
           {
               input >> *q;
           }
     }
}

ostream & operator << (ostream & output,Matrix &m)
{
     int (*p)[3];
     int *q;
     for(p = m.data;p < m.data + 2;p++)
     {
           for (q = *p; q < *p + 3;q++)
           {
               output << *q << " ";
           }
           output << endl;
     }
}

Matrix operator +(Matrix m1,Matrix m2)
{
    Matrix result;
    int (*p)[3];
    int *q;
    
    int (*pm1)[3],(*pm2)[3];
    int *pm11,*pm12;
    
    for(pm1 = m1.data,pm2 = m2.data,p = result.data;p < result.data + 2;p++,pm1++,pm2++)
     {
           for (pm11 = *pm1,pm12 = *pm2,q = *p; q < *p + 3;q++,pm11++,pm12++)
           {
               *q = *pm11 + *pm12;
           }
     }
     return result;
    
}

int main()
{
    Matrix m1,m2,m3;
    cin >> m1;
    cin >> m2;
    m3 = m1 + m2;
    
    cout << m3;
    
    system("pause");
    return 0;
}