C# program to convert binary to decimal

First, set the binary value -

int num = 101;

Now assign the binary to a new variable -

binVal = num;

Loop over the binary number like this and the base value until the value is greater than 0,

while (num > 0) { rem = num % 10; decVal = decVal + rem * baseVal; num = num / 10; baseVal = baseVal * 2; }

Example

The following is the code to convert binary to decimal.

Live Demo

using System; using System.Collections.Generic; using System.Text; namespace Demo { class MyApplication { static void Main(string[] args) { int num, binVal, decVal = 0, baseVal = 1, rem; num = 101; binVal = num; while (num > 0) { rem = num % 10; decVal = decVal + rem * baseVal; num = num / 10 ; baseVal = baseVal * 2; } Console.Write("Binary Number: "+binVal); Console.Write("Decimal: "+decVal); Console.ReadLine(); } } }

Output

Binary Number: 101 Decimal: 5

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