Question

convert the following number into their equivalent decimal number. (i) -(10101)2​

Answer 1

Answer:

An easy method of converting decimal to binary number equivalents is to write down the decimal number and to continually divide-by-2 (two) to give a result and a remainder of either a “1” or a “0” until the final result equals zero. So for example. Convert the decimal number 29410 into its binary number equivalent.

21 10101 25

Answer 2

Answer:

Code to convert binary to decimal in python, C++ and java is

Explanation:

1. Python :

def binaryToDecimal(n):

   num = n;

   dec_value = 0;

   base = 1;

   

   temp = num;

   while(temp):

       last_digit = temp % 10;

       temp = int(temp / 10);

       

       dec_value += last_digit * base;

       base = base * 2;

   return dec_value;

num = 10101;

print("Binary to decimal conversion for 10101 is : " ,binaryToDecimal(num) );

2. C++

#include <iostream>

using namespace std;

int binaryToDecimal(int n)

{

   int num = n;

   int dec_value = 0;

   int base = 1;

   int temp = num;

   while (temp) {

       int last_digit = temp % 10;

       temp = temp / 10;

       dec_value += last_digit * base;

       base = base * 2;

   }

   return dec_value;

}

int main()

{

   int num = 10101;

   cout << binaryToDecimal(num) << endl;

}

3. Java

class GFG {

   static int binaryToDecimal(int n)

   {

       int num = n;

       int dec_value = 0;

       int base = 1;

       int temp = num;

       while (temp > 0) {

           int last_digit = temp % 10;

           temp = temp / 10;

           dec_value += last_digit * base;

           base = base * 2;

       }

       return dec_value;

   }

   public static void main(String[] args)

   {

       int num = 10101;

       System.out.println(binaryToDecimal(num));

   }

}

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