Matrix Multiplication

Create a 'MATRIX' class of size m X n. Overload the ‘+’ operator to add two MATRIX objects. Write a main function to implement it.

#include<iostream.h>

#include<conio.h>

class mat

{

int m,n,a[20][20];

public:

mat(int x,int y);

void readmat();

mat operator +(mat);

void display();

};

mat :: mat(int x,int y)

{

m=x;n=y;

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

{

for(int j=0;j<n;j++)

a[i][j]=0;

}

}

void mat :: readmat()

{

cout<<"\nEnter matrix elements\n";

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

for(int j=0;j<n;j++)

cin>>a[i][j];

}

mat mat:: operator +(mat obj)

{

mat temp(m,n);

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

for(int j=0;j<n;j++)

{

temp.a[i][j]=a[i][j]+obj.a[i][j];

}

return temp;

}

void mat:: display()

{

int i,j;

for(i=0;i<m;i++)

{

cout<<"\n\n";

for(j=0;j<n;j++)

cout<<"\t"<<a[i][j];

}

}

int main()

{

int m1,n1;

clrscr();

cout<<"\nEnter the size(m,n) of matrix: ";

cin>>m1>>n1;

mat a(m1,n1),b(m1,n1),c(m1,n1);

cout<<"\nEnter martix 1: ";

a.readmat();

cout<<"\nEnter matrix 2: ";

b.readmat();

c=a.operator +(b);

cout<<"\nFirst Matrix :\n";

a.display();

cout<<"\nSecond Matrix :\n";

b.display();

cout<<"\nmatrix 1+matrix 2: ";

c.display();

getch();

return 0;

}

Output of the above program is:

Enter the size(m,n) of matrix: 2 2

Enter martix 1: Enter matrix elements

3 3

3 3

Enter matrix 2: Enter matrix elements

4 4

4 4

First Matrix :

3 3

3 3

Second Matrix :

4 4

4 4

matrix 1 + matrix 2:

7 7

7 7

Thanks

Mukesh Rajput