What are all the possible C# array initialization syntaxes?

Array can be initialized in more than one ways in C#. Let us see some example.

Method One

Using size of array.

int [] marks = new int[5] { 99, 98, 92, 97, 95};

Method Two

By omitting the size.

int [] marks = new int[] { 99, 98, 92, 97, 95};

Method Three

Initializing at the time of declaration.

int [] marks = { 99, 98, 92, 97, 95};

Let us see one of the ways to initialize arrays in C#.

Example

 Live Demo

using System;
namespace Demo {
   class MyArray {
      static void Main(string[] args) {
         int [] n = new int[10]; /* n is an array of 10 integers */
         int i,j;
         /* initialize elements of array n */
         for ( i = 0; i < 10; i++ ) {
            n[ i ] = i + 100;
         }
         /* output each array element's value */
         for (j = 0; j < 10; j++ ) {
            Console.WriteLine("Element[{0}] = {1}", j, n[j]);
         }
         Console.ReadKey();
      }
   }
}

Output

Element[0] = 100
Element[1] = 101
Element[2] = 102
Element[3] = 103
Element[4] = 104
Element[5] = 105
Element[6] = 106
Element[7] = 107
Element[8] = 108
Element[9] = 109

Arjun Thakur

Updated on: 23-Jun-2020

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