Matrix operator *(int &n,Matrix &x); 出错了

This operator multiplies each element in the matrix by an integer value.

Example:

Suppose we have a matrix A:

1 2 3
4 5 6
7 8 9

If we multiply A by 2, we get:

2 4 6
8 10 12
14 16 18

The implementation of this operator could be:

Matrix Matrix::operator*(int scalar) const {
    Matrix result(rows, cols);
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            result.data[i][j] = data[i][j] * scalar;
        }
    }
    return result;
}

This implementation creates a new matrix `result` with the same dimensions as the original matrix, and then multiplies each element in the original matrix by the scalar value, storing the result in the corresponding element in `result`. Finally, it returns the new matrix.