public static void Main()
int[,] a = new int[2, 2];
a[0, 0] = 1; a[0, 1] = 2;
a[1, 0] = 3; a[1, 1] = 4;
int[,] b = new int[2, 2];
b[0, 0] = 5; b[0, 1] = 6;
b[1, 0] = 7; b[1, 1] = 8;
int[,] hasil = new int[2, 2];
hasil[0, 0] = a[0, 0] + b[0, 0];
hasil[0, 1] = a[0, 1] + b[0, 1];
hasil[1, 0] = a[1, 0] + b[1, 0];
hasil[1, 1] = a[1, 1] + b[1, 1];
Console.Write(hasil[0, 0]+ " ");
Console.WriteLine(hasil[0, 1]);
Console.Write(hasil[1, 0]+ " ");
Console.Write(hasil[1, 1]);