How to initialize double dimensional array with zero in c#

Question

I'm new to c#. I have two dimensional array. I want to initialize with 0.

Here is code. I have an error at Array.fill()

int N = elements;
int M N * 2;
int[,] amn = new int[M,N];
for(int i = 0; i < M; i++)
    Arrays.fill(amn[i], 0);

Solution 1

You don't need to do anything.

From Arrays (C# Programming Guide)

The default values of numeric array elements are set to zero, and reference elements are set to null.

So, when you write;

int[,] amn = new int[M,N];

all elements initalized to 0.

You can see on debugger;

Solution 2

As far as I remember Arrays elements are initialized with 0 or null for reference types, so If you make new Array of int's it should have only zeros.

Read this to know more about Arrays

The default values of numeric array elements are set to zero, and reference elements are set to null.

Solution 3

Integer arrays are initialized to 0 by default. So the following code would be functionally equal:

int n = elements;
int m = n * 2;
int[,] amn = new int[m, n];

Or in short:

var amn = new int[elements * 2, elements];