Question

In c++ create a static and stack dynamic matrices. Fill the matrices with random number from 1-100. Optional, in subprogram, perform matrix multiplication on static matrices (Matrix class with overloaded operator for matrix multiplication provided below

class Matrix
{
int a[2][2];
public:
Matrix operator * (Matrix x);
};

Matrix
Matrix::operator * (Matrix x)
{
Matrix t;
for (int i = 0; i < 2; i++)
for (int j = 0; j < 2; j++)
{
   t.a[i][j] = 0;
   for (int k = 0; k < 2; k++)
   t.a[i][j] += a[i][k] * x.a[k][j];
}
return t;
}

Answer 1

If you have any doubts, please give me comment...

#include <iostream>

#include <cstdlib>

using namespace std;

class Matrix

{

int a[2][2];

public:

Matrix();

Matrix operator*(Matrix x);

void printMatrix();

};

Matrix::Matrix(){

for(int i=0; i<2; i++){

for(int j=0; j<2; j++){

a[i][j] = (rand()%100)+1;

}

}

}

Matrix Matrix::operator*(Matrix x)

{

Matrix t;

for (int i = 0; i < 2; i++)

for (int j = 0; j < 2; j++)

{

t.a[i][j] = 0;

for (int k = 0; k < 2; k++)

t.a[i][j] += a[i][k] * x.a[k][j];

}

return t;

}

void Matrix::printMatrix(){

for(int i=0; i<2; i++){

for(int j=0; j<2; j++){

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

}

cout<<endl;

}

}

int main()

{

Matrix mat1, mat2, mat3;

mat3 = mat1*mat2;

cout<<"Matrix 1: "<<endl;

mat1.printMatrix();

cout<<"Matrix 2: "<<endl;

mat2.printMatrix();

cout<<"Matrix 3: "<<endl;

mat3.printMatrix();

return 0;

}