#include <iostream.h>//using namespace std;class Matrix{public:Matrix();friend Matrix operator+(Matrix &,Matrix &);friend ostream& operator<<(ostream&,Matrix&);friend istream& operator>>(istream&,Matrix&);private:int mat[2][3];};Matrix::Matrix(){for(int i=0;i<2;i++)for(int j=0;j<3;j++)mat[i][j]=0;}Matrix operator+(Matrix &a,Matrix &b){Matrix c;for(int i=0;i<2;i++)for(int j=0;j<3;j++){c.mat[i][j]=a.mat[i][j]+b.mat[i][j];}return c;}
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