Decimal C# | Convert Decimal to Binary | C# Program to Convert Decimal to Binary - c# - c# tutorial - c# net
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 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 |

Convert Decimal to Binary in C#
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.
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public class ConversionExample
{
public static void Main(string[] args)
{
int n, i;
int[] a = new int[10];
Console.Write("Enter the number to convert: ");
n= int.Parse(Console.ReadLine());
for(i=0; n>0; i++)
{
a[i]=n%2;
n= n/2;
}
Console.Write("Binary of the given number= ");
for(i=i-1 ;i>=0 ;i--)
{
Console.Write(a[i]);
}
}
}
C# examples - Output :
Enter the number to convert:10
Binary of the given number= 1010