Write a C++ Program For Add Two Matrix Using Multi-dimensional Arrays

#include <iostream>
using namespace std;
int main(){

    int r,c,a[100][100],b[100][100],sum[100][100],i,j;
    cout << "Enter number of rows (between 1 and 100): ";
    cin >> r;
    cout << "Enter number of columns (between 1 and 100): ";
    cin >> c;
    cout << endl << "Enter elements of 1st matrix: " << endl;

/* Storing elements of first matrix entered by user. */

    for(i=0;i<r;++i)
       for(j=0;j<c;++j)
       {
           cout << "Enter element a" << i+1 << j+1 << " : ";
           cin >> a[i][j];
       }

/* Storing elements of second matrix entered by user. */

    cout << endl << "Enter elements of 2nd matrix: " << endl;
    for(i=0;i<r;++i)
       for(j=0;j<c;++j)
       {
           cout << "Enter element b" << i+1 << j+1 << " : ";
           cin >> b[i][j];
       }

/*Adding Two matrices */

   for(i=0;i<r;++i)
       for(j=0;j<c;++j)
           sum[i][j]=a[i][j]+b[i][j];

/* Displaying the resultant sum matrix. */

    cout << endl << "Sum of two matrix is: " << endl;
    for(i=0;i<r;++i)
       for(j=0;j<c;++j)
       {
           cout << sum[i][j] << "  ";
           if(j==c-1)
               cout << endl;
       }

    return 0;
}


Output


Enter number of rows (between 1 and 100): 2
Enter number of columns (between 1 and 100): 2

Enter elements of 1st matrix:
Enter element a11: -4
Enter element a12: 5
Enter element a21: 6
Enter element a22: 8

Enter elements of 2nd matrix:
Enter element b11: 3
Enter element b12: -9
Enter element b21: 7
Enter element b22: 2

Sum of two matrix is:
-1   -4
13   6