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## C# Program to convert Decimal to Binary

We can convert any decimal number (base-10 (0 to 9)) into binary number (base-2 (0 or 1)) by C# program.

Decimal Number

Decimal number is a base 10 number because it ranges from 0 to 9, there are total 10 digits between 0 to 9. Any combination of digits is decimal number such as 223, 585, 192, 0, 7 etc.

Binary Number

Binary number is a base 2 number because it is either 0 or 1. Any combination of 0 and 1 is binary number such as 1001, 101, 11111, 101010 etc.

Let's see the some binary numbers for the decimal number.

Decimal Binary
1 0
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010

Decimal to Binary Conversion Algorithm

Step 1: Divide the number by 2 through % (modulus operator) and store the remainder in array

Step 2: Divide the number by 2 through / (division operator)

Step 3: Repeat the step 2 until the number is greater than zero

Let's see the C# example to convert decimal to binary.

1. using System;
2.   public class ConversionExample
3.    {
4.      public static void Main(string[] args)
5.       {
6.        int  n, i;
7.        int[] a = new int[10];
8.        Console.Write("Enter the number to convert: ");
10.        for(i=0; n>0; i++)
11.         {
12.          a[i]=n%2;
13.          n= n/2;
14.         }
15.        Console.Write("Binary of the given number= ");
16.        for(i=i-1 ;i>=0 ;i--)
17.        {
18.         Console.Write(a[i]);
19.        }
20.       }
21.   }

Output:

```Enter the number to convert:10
Binary of the given number= 1010 ```