IGNOU BCA 3rd sem Solved Assignment - Write a C++ program to create Matrix class. This class should have functions to find the sum and difference of two matrices.

Write a C++ program to create Matrix class. This class should have functions to find the sum and difference of two matrices.

Ans

Code for Program that performs addition of 2 matrix using friend function in C++ Programming

#include <iostream.h>

#include <iomanip.h>

#include <conio.h>

class matrix

{

int **p,row,col;

public:

void getdata(void);

friend void matrixadd(matrix &,matrix &);

void display(void);

};

void matrix :: getdata(void)

{

clrscr();

cout<<"Enter Size of Row:-";

cin>>row;

p=newint *[row];

cout<<"Enter size of Coulumn:-";

cin>>col;

cout<<"\nEnter Data for Matrix of size "<<row<<"*"<<col<<endl;

 for(int i=0;i<row;i++)

 {

   p[i]=newint [col];

 }

//scaning valuefor(int a=0;a<row;a++)

{

  for(int b=0;b<col;b++)

  {

     cin>>p[a][b];

  }

}

}

void matrix :: display(void)

{

cout<<"\n\n\n\n";

cout<<"Display Function\n\n";

for(int i=0;i<row;i++)

{

   for(int j=0;j<col;j++)

   {

     cout<<setw(5)<<p[i][j];

   }

cout<<endl;

}

}

void matrixadd(matrix &a,matrix &b)

{

int result[10][10];

if(a.row==b.row && a.col==b.col)

{

  for(int i=0;i<a.row;i++)

  {

    for(int j=0;j<a.col;j++)

    {

         result[i][j]=a.p[i][j]+b.p[i][j];

    }

  }

//displayingfor(int x=0;x<a.row;x++)

  {

    for(int y=0;y<a.col;y++)

    {

      cout<<setw(5)<<result[x][y];

    }

    cout<<endl;

  }

}

else

  cout<<"Invalid Matrix Addition Occurs as size differs\n";

}

void main()

{

matrix o1,o2;

o1.getdata();

o2.getdata();

clrscr();

o1.display();

o2.display();

getch();

clrscr();

cout<<"\n\nAfter Adition Has been Performed\n\n";

matrixadd(o1,o2);

getch();

}