//program to find the sum of two matrices by using objects
#include<iostream.h>
#include<conio.h>
class MATRIX
{ private:
  int a[20][20];
  int m;
  int n;
 public:
  void enter();
  void display();
  void add_mat(MATRIX,MATRIX);
} obj;
void MATRIX::enter()
{cout<<"\n Enter the number of rows:";
 cin>>m;
 cout<<"\n Enter the number of columns:";
 cin>>n;
 cout<<"\n Enter the elements of matrix:";
  for(int i=0;i<m;i++)
  { for(int j=0;j<n;j++)
{ cout<<"\n Enter a["<<i<<"]["<<j<<"]:";
cin>>a[i][j];
}
  }

 }
void MATRIX::display()
{
  cout<<"\n matrix is:";
  for(int i=0;i<m;i++)
  { cout<<"\n";
for(int j=0;j<n;j++)
cout<<a[i][j]<<" ";
  }
}
void MATRIX::add_mat(MATRIX A1,MATRIX A2)
{     if(A1.m==A2.m && A1.n==A2.n)
      {
obj.m=A1.m;
obj.n=A2.n;
for(int i=0;i<A1.m;i++)
for(int j=0;j<A2.n;j++)
{
obj.a[i][j]=A1.a[i][j]+A2.a[i][j];
}
cout<<"\n Addition of matrices:";
obj.display();
      }
     else
     {
      cout<<"\n\nMatrices cannot be added!!!";
      getch();
     }
}
void main()
{ clrscr();
  MATRIX a1,a2,a3;
  a1.enter();
  a1.display();
  a2.enter();
  a2.display();
  a3.add_mat(a1,a2);
  getch();
  }