#include <iostream>
using namespace std;
int main()
{
    int a[10][10], i, j, m, n;
    cout<<"Enter the number of row(s) ";
    cin>>m;
    cout<<"Enter the number of column(s) ";
    cin>>n;
    if (m * n <= 0 || m && n < 0)
    {
        cout<<"-------------------------------------------";
        cout<<"\nEnter the valid number of rows and columns";
        cout<<"\n-------------------------------------------\n";
    }
    else
    {
        cout<<"\nEnter elements for matrix A \n";
        for (i = 1; i <= m; i++)
        {
            for (j = 1; j <= n; j++)
            {
                cout<<"["<<i<<"]"
                    <<"["<<j<<"]=";
                cin>>a[i][j];
            }
            cout<<"\n";
        }
        cout<<"Matrix A is \n";
        for (i = 1; i <= m; i++)
        {
            for (j = 1; j <= n; j++)
            {
                cout<<"\t"<<a[i][j];
            }
            cout<<"\n";
        }
    }
    return 0;
}

kodingwindow@kw:~$ g++ kw.cpp
kodingwindow@kw:~$ ./a.out
Enter the number of row(s) -5
Enter the number of column(s) 2
-------------------------------------------
Enter the valid number of rows and columns
-------------------------------------------
kodingwindow@kw:~$ ./a.out
Enter the number of row(s) 2
Enter the number of column(s) 3

Enter elements for matrix A 
[1][1]=1
[1][2]=5
[1][3]=9

[2][1]=7
[2][2]=5
[2][3]=3

Matrix A is 
	1	5	9
	7	5	3
kodingwindow@kw:~$