Write a C++ program to illustrate the operator overloading concept using Matrix addition as an example.

Write a C++ program to illustrate the operator overloading concept using Matrix addition as an example.

Program Algorithm:

Step 1: Create a class ’matrix’ with the constructor that sets the value of its member variables.

Step 2: This class also overloads the + and = operator with proper operator overloaded functions.

Step 3: Define the operators.

Step 4: Create the object of this class and call these overloaded functions.

Program Code:

#include<iostream.h>

class Matrix

{

public:

float row,col;

float **arr;

Matrix();

Matrix(float,float);

int inputDim(float,float);

int getMatrix();

Matrix operator+(Matrix);

Matrix operator=(Matrix&);

};

int Matrix::getMatrix()

{

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

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

cin>>arr[i][j];

return 0;

}

Matrix::Matrix(float r,float c)

{

row=r;

col=c;

arr=new float*[row];

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

arr[i]=new float[col];

}

Matrix::Matrix()

{

row=col=0;

arr=NULL;

}

int Matrix::inputDim(float r,float c)

{

row=r;

col=c;

arr=new float*[row];

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

arr[i]=new float[col];

return 0;

}

Matrix Matrix::operator+(Matrix m)

{

Matrix t;

t.inputDim(m.row,m.col);

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

for(int j=0;j<m.col;j++)

t.arr[i][j]=arr[i][j]+m.arr[i][j];

return t;

}

Matrix Matrix::operator=(Matrix &m)

{

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

for(int j=0;j<m.col;j++)

arr[i][j]=m.arr[i][j];

return *this;

}

int main()

{

int r,c;

int getDimension(int &r,int &c);

int showResult(Matrix);

cout<<"\nEnter the matrix size of A\n";

getDimension(r,c);

Matrix a(r,c);

cout<<"\nEnter the matrix A\n";

a.getMatrix();

cout<<"\nEnter the matrix size of B\n";

getDimension(r,c);

Matrix b(r,c);

cout<<"\nEnter the matrix B\n";

b.getMatrix();

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

{

Matrix x(r,c);

x=a+b;

cout<<"\nMatrix A:\n";

showResult(a);

cout<<"\nMatrix B:\n";

showResult(b);

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

showResult(x);

}

else

cout<<"\nAddition not possible\n";

return 0;

}

int getDimension(int &r,int &c)

{

cout<<"\nEnter row and column:\n";

cin>>r>>c;

return 0;

}

int showResult(Matrix x)

{

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

{

for(int j=0;j<x.col;j++)

cout<<x.arr[i][j]<<" ";

cout<<"\n";

}

return 0;

}

Output:

Enter the matrix size of A:

Enter rows & columns 2 2

Enter the matrix A:

1 1 1 1

Enter the matrix size of B:

Enter rows & columns 2 2

Enter the matrix B:

1 1 1 1

Matrix A: 1 1 1 1

Matrix B: 1 1 1 1

Resultant Matrix:

2 2

2 2