Matriz bidimensional Ejercicio C# - Curso de Programación C# (C Sharp)

using System;
public class exercise77
{
    public static void Main()
    {
        float[,] puntuations = new float[10, 10];
        for (int i = 0; i < 2; i++)
        {
            for (int j = 0; j < 10; j++)
            {
                Console.WriteLine("Enter the puntuation {0} group {1}: ", j + 1, i + 1);
                puntuations[i, j] = Convert.ToSingle(Console.ReadLine());
            }
        }
    }
}