I've tried many ways But still get Presentation Error!:(

    #include <iostream>
    #define max 60

    using namespace std;

    int board[max][max];

    void upward(int);
    void downward(int);
    void forward(int);
    void backward(int);
    void transpose(int);
    void rotate(int);

    int main()
    {
        int t, n, i, j, notfirst = 0;
        char str[100];
        cin >> t;
        while(t--)
        {
            if(notfirst)
            {
                cout << endl;
            }
            cin >> n;
            for(i=0;i<n;i++)
            {
                for(j=0;j<n;j++)
                {
                    cin >> board[i][j];
                }
            }
            cin >> str;
            for(i=0;str[i];i++)
            {
                switch(str[i])
                {
                    case 'U':
                        upward(n);
                        break;
                    case 'D':
                        downward(n);
                        break;
                    case 'F':
                        forward(n);
                        break;
                    case 'B':
                        backward(n);
                        break;
                    case 'T':
                        transpose(n);
                        break;
                    case 'R':
                        rotate(n);
                        break;
                };
            }
            for(i=0;i<n;i++)
            {
                for(j=0;j<n;j++)
                {
                    cout << board[i][j];
                    if(j != n-1)
                    {
                        cout << " ";
                    }
                }
                cout << endl;
            }
            notfirst = 1;
        }
        return 0;
    }

    void upward(int n)
    {
        int temp[max], i, j;
        for(i=0;i<n;i++)
        {
            temp[i] = board[0][i];
        }
        for(i=0;i<n;i++)
        {
            for(j=0;j<n;j++)
            {
                board[i][j] = board[i+1][j];
            }
        }
        for(i=0;i<n;i++)
        {
            board[n-1][i] = temp[i];
        }
    }

    void downward(int n)
    {
        int temp[max], i, j;
        for(i=0;i<n;i++)
        {
            temp[i] = board[n-1][i];
        }
        for(i=n-2;i>=0;i--)
        {
            for(j=0;j<n;j++)
            {
                board[i+1][j] = board[i][j];
            }
        }
        for(i=0;i<n;i++)
        {
            board[0][i] = temp[i];
        }
    }

    void forward(int n)
    {
        int temp[max], i, j;
        for(i=0;i<n;i++)
        {
            temp[i] = board[i][n-1];
        }
        for(j=n-2;j>=0;j--)
        {
            for(i=0;i<n;i++)
            {
                board[i][j+1] = board[i][j];
            }
        }
        for(i=0;i<n;i++)
        {
            board[i][0] = temp[i];
        }
    }

    void backward(int n)
    {
        int temp[max], i, j;
        for(i=0;i<n;i++)
        {
            temp[i] = board[i][0];
        }
        for(j=0;j<n;j++)
        {
            for(i=0;i<n;i++)
            {
                board[i][j] = board[i][j+1];
            }
        }
        for(i=0;i<n;i++)
        {
            board[i][n-1] = temp[i];
        }
    }

    void transpose(int n)
    {
        int i, j, temp;
        for(i=0;i<n;i++)
        {
            for(j=i+1;j<n;j++)
            {
                temp = board[i][j];
                board[i][j] = board[j][i];
                board[j][i] = temp;
            }
        }
    }

    void rotate(int n)
    {
        int i, j, k, temp;
        for(i=0;i<n;i++)
        {
            for(j=i+1;j<n;j++)
            {
                temp = board[i][j];
                board[i][j] = board[j][i];
                board[j][i] = temp;
            }
        }
        for(i=0;i<n;i++)
        {
            for(j=0,k=n-1;j<k;j++,k--)
            {
                temp = board[i][j];
                board[i][j] = board[i][k];
                board[i][k] = temp;
            }
        }
    }

The last line of output section says

You should print an empty line after each test.

There is no need to check if this is the first testcase or not. You have to print a blank line after each testcase!

You can remove the these lines:

if(notfirst)
{
    cout << endl;
}

and in the last lines of main function (that prints the board array), instead of notfirst = 1; just print another blank line: cout << endl;

Tnx So Much!