Matrix addition subtraction and multiplication c++ program

#include<iostream>

using namespace std;

int main()
{
    int m, n, c, d, first[10][10], second[10][10], sum[10][10];

    cout << "Enter the number of rows and columns of matrix : ";
    cin >> m >> n;
    cout << "Enter the elements of first matrix : \n";

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            cin >> first[c][d];

    cout << "Enter the elements of second matrix : \n";

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            cin >> second[c][d];

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            sum[c][d] = first[c][d] + second[c][d];

    cout << "Sum of entered matrices:-\n";

    for (c = 0; c < m; c++)
    {
        for (d = 0; d < n; d++)
            cout << sum[c][d] << "\t";

        cout << endl;
    }

    return 0;
}

Output :

Enter the number of rows and columns of matrix : 2 2
Enter the elements of first matrix :
8 1
2 3
Enter the elements of second matrix :
4 9
5 2
Sum of entered matrices:-
12      10
7       5

Matrix subtraction program

#include<iostream>

using namespace std;

int main()
{
    int m, n, c, d, first[10][10], second[10][10], sub[10][10];

    cout << "Enter the number of rows and columns of matrix : ";
    cin >> m >> n;
    cout << "Enter the elements of first matrix : \n";

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            cin >> first[c][d];

    cout << "Enter the elements of second matrix : \n";

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            cin >> second[c][d];

    for (c = 0; c < m; c++)
        for (d = 0; d < n; d++)
            sub[c][d] = first[c][d] - second[c][d];

    cout << "Subtraction of entered matrices:-\n";

    for (c = 0; c < m; c++)
    {
        for (d = 0; d < n; d++)
            cout << sub[c][d] << "\t";

        cout << endl;
    }

    return 0;
}

Output : 

Enter the number of rows and columns of matrix : 3 3
Enter the elements of first matrix :
7 6 4
1 9 8
2 3 0
Enter the elements of second matrix :
2 6 4
5 6 1
2 0 9
Subtraction of entered matrices:-
5       0       0
-4      3       7
0       3       -9

Matrix multiplication program

#include<iostream>

using namespace std;

int main()
{

    int a[5][5], b[5][5], c[5][5], m, n, p, q, i, j, k;

    cout << "Enter rows and columns of first matrix: ";
    cin >> m >> n;

    cout << "Enter rows and columns of second matrix: ";
    cin >> p >> q;

    if (n == p)
    {
        cout << "\nEnter first matrix:\n";
        for (i = 0; i < m; ++i)
            for (j = 0; j < n; ++j)
                cin >> a[i][j];

        cout << "\nEnter second matrix:\n";
        for (i = 0; i < p; ++i)
            for (j = 0; j < q; ++j)
                cin >> b[i][j];

        cout << "\nThe new matrix is:\n";

        for (i = 0; i < m; ++i)
        {
            for (j = 0; j < q; ++j)
            {
                c[i][j] = 0;
                for (k = 0; k < n; ++k)
                    c[i][j] = c[i][j] + (a[i][k] * b[k][j]);
                cout << c[i][j] << "\t";
            }
            cout << "\n";
        }
    }
    else
        cout << "\nSorry!!!! Matrix multiplication can't be done";

    return 0;
}

Output : 

Enter rows and columns of first matrix: 2
3
Enter rows and columns of second matrix: 3
2

Enter first matrix:
1
2
3
4
5
6

Enter second matrix:
1

2
3
4
5
6

The new matrix is:
22      28
49      64