Symmetric Matrix..

#include<iostream>
using namespace std;

int main()
{
    int cases, rows;
    long long matrix[100][100];
    bool symmetric = true;
    char x, y;
    cin >> cases;
    for(int i = 1; i <= cases; i++)
    {
        cin >> x >> y >> rows;
        for(int j = 0; j < rows; j++)
        {
            for(int k = 0; k < rows; k++)
            {
                cin >> matrix[j][k];
                if(matrix[j][k] < 0)
                    symmetric = false;
            }
        }
        if(symmetric == false)
        {
            cout << "Test #" << i << ": Non-symmetric." << endl;
            continue;
        }
        int chek = rows - 1;
        for(int a = 0; a < rows; a++)
        {
            for(int b = 0; b < rows; b++)
            {
                if(matrix[a][b] == matrix [chek-a][chek-b])
                    symmetric = true;
                else
                {
                    symmetric = false;
                    break;
                }
            }
            if(symmetric == false)
                break;
        }
        if(symmetric)
            cout << "Test #" << i << ": Symmetric." << endl;
        else
            cout << "Test #" << i << ": Non-symmetric." << endl;
        symmetric = true;

    }
    return 0;
}