Adunarea a doua matrice

#include <iostream>
using namespace std;
int main()
{
    int i, j, m, n, a[100][100], b[100][100], c[100][100];
    cout << "Introduceti numarul de linii: ";
    cin >> m;
    cout << "Introduceti numarul de coloane: ";
    cin >> n;
    for(i = 1; i <= m; i++)
        for(j = 1; j <= n; j++)
        {
            cout << "a[" << i << "][" << j << "]=";
            cin >> a[i][j];
        }
    for(i = 1; i <= m; i++)
        for(j = 1; j <= n; j++)
        {
            cout << "b[" << i << "][" << j << "]=";
            cin >> b[i][j];
        }
    for(i = 1; i <= m; i++)
        for(j = 1; j <= n; j++)
        {
            c[i][j] = a[i][j] + b[i][j];
        }
    for(i = 1; i <= m; i++) {
        for(j = 1; j <= n; j++)
            cout << c[i][j] << " ";
        cout << endl;
    }
    cout << endl;
    return 0;
}