Question

Program to convert binary to decimal

ENTER BINARY NUMBER:1001
THE DECIMAL VALUE OF BINARY 1001 IS 9

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Code

Java

Python

Java

import java.util.Scanner;
public class BinaryToDecimal
{
    public static void main()
    {
        int count=0;
        Scanner sc=new Scanner(System.in);
        long decimal=0,binary=0,temp=0;
        count=0;
        System.out.print("ENTER BINARY NUMBER:");
        binary=sc.nextInt();
        temp=binary;
        while(temp>0)
        {
            decimal=decimal+(temp%10)*((long)Math.pow(2,count));

            count++;
            temp=temp/10;
        }
        System.out.println("THE DECIMAL VALUE OF BINARY "+binary+" IS "+decimal);
    }
}

Python

binaryNumber=int(input("Enter positive Binary number:"))
count=0
decimalNumber=0
temp=binaryNumber
while(temp>0):
    rem=temp%10
    decimalNumber=decimalNumber+rem*(2**count)
    count=count+1
    temp=temp//10
print("Decimal number of binary number:",binaryNumber,"is:",decimalNumber)