Add Two Matrices using Multi-dimensional Arrays

[BuggySumit]

#include
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;

}