C++ Matrix Multiplication using OOP

#include<iostream> using namespace std; class Matrix { private: int a[10][10], row, col; public: Matrix(int row = 10, int col = 10) { this->row = row; this->col = col; } void getData() { cout << "Enter " << (row * col) << " elements:\n"; for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { cin >> a[i][j]; } } } void print() { for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { cout << a[i][j] << "\t"; } cout << endl; } } // Multiply matrix of current instance with the argument matrix Matrix multiply(Matrix b) { if (col != b.row) { cout << "Matrices cannot be multiplied. Argument Matrix returned\n"; return b; } Matrix ans(row, b.col); for (int i = 0; i < row; i++) { for (int j = 0; j < b.col; j++) { ans.a[i][j] = 0; for (int k = 0; k < b.row; k++) { ans.a[i][j] += a[i][k] * b.a[k][j]; } } } return ans; } }; int main() { Matrix a(2, 3); a.getData(); a.print(); Matrix b(3, 2); b.getData(); b.print(); Matrix c = a.multiply(b); c.print(); return 0; }

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