C++程序习题-运算符重载[4.4]

时间：2010-11-22 来源：chengxiaopeng

有两个矩阵a和b，均为2行3列。求两个矩阵之和。重载运算符"+",使之能用于矩阵相加，如：c = a + b.

#include <iostream>
using namespace std;

class Matrix
{
      public:
      void input(); //用于输入数据

      void display(); //显示数据函数

      friend Matrix operator +(Matrix m1,Matrix m2); //定义重载函数

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


};

void Matrix::input()
{
     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 = data;p < data + 2;p++)
     {
           for (q = *p; q < *p + 3;q++)
           {
               cin >> *q;
           }
     }
}

void Matrix::display()
{
     int (*p)[3];
     int *q;
     for(p = data;p < data + 2;p++)
     {
           for (q = *p; q < *p + 3;q++)
           {
               cout << *q << " ";
           }
           cout << 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;
    m1.input();
    m2.input();
    m3 = m1 + m2;

    m3.display();

    system("pause");
    return 0;
}