How to Create One-Dimensional Array in C#

[jakobovis]

In this tutorial, you will learn how to create a one-dimensional array in your program in C#. We all know that an array a collection of variables of the same type that are referred to by a common name. Meaning, it is a storage variable that has different values.

To declare an array in C#, have this syntax:

1. data type[
   
   ]
   
   array name =
   
   new
   
   data type[
   
   size]
   
   ;
   

Now, let's start this tutorial!

1. Let's start with creating a Windows Form Application in C# for this tutorial by following the following steps in Microsoft Visual Studio: Go to File, click New Project, and choose Console Application and name your project as ArraySample.

2. Now, put this code in your program.

1. using
   
   System
   
   ;
   
2. using
   
   System.Collections.Generic
   
   ;
   
3. using
   
   System.Linq
   
   ;
   
4. using
   
   System.Text
   
   ;
   
5. 
   
6. namespace
   
   ArraySample
   
7. {
   
8. class
   
   Program
   
9. {
   
10. public
    
    static
    
    void
    
    Main(
    
    )
    
11. {
    
12. int
    
    [
    
    ]
    
    element =
    
    new
    
    int
    
    [
    
    10
    
    ]
    
    ;
    
    //declaring one-dimensional array
    
13. int
    
    i;
    
    // variable for for loop
    
14. 
    
15. for
    
    (
    
    i =
    
    0
    
    ;
    
    i <=
    
    9
    
    ;
    
    i++
    
    )
    
    //starts i with 0, ends at 9, and will increment by 1
    
16. element[
    
    i]
    
    =
    
    i;
    
    // the array will hold the value of variable i in the loop
    
17. 
    
18. for
    
    (
    
    i =
    
    0
    
    ;
    
    i <=
    
    9
    
    ;
    
    i++
    
    )
    
    // declare again the for loop
    
19. Console.
    
    WriteLine
    
    (
    
    "element["
    
    +
    
    i +
    
    "]: "
    
    +
    
20. element[
    
    i]
    
    )
    
    ;
    
    //display the array element from 0-9
    
21. }
    
22. }
    
23. }
    

We declare the one-dimensional array with the named element as an Integer variable that holds an index of 10. We all know that an array starts at 0, so the value must be 0-9 only.

Next, we have declared a for loop that has variable i that starts from 0, ends at 9, and will increment by 1 during execution. Next, the array named element holds now the value of variable i in the loop.

We also called again the loop and display it using the Console.WriteLine function as we call the value of their indexes and element equal from 0 to 9.

Output:

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