Question

Write a program that prompts the user to enter a binary string and displays the corresponding decimal integer value.

For example, binary string ‘10001’ is 17 (1*24 +0*23 +0*22 +0*2 + 1 = 17)

A sample run :

Enter a binary: 10001

17

Enter second integer: 110

6

Use python.

Answer 1

binary_string = input('Enter binary : ')

def converter(binary_string):

    current_value = 2**(len(binary_string)-1)
    total = 0
    for i in binary_string:
      if i is '1':
            total += current_value
elif i is '0':
            pass
        else:
            print('non binary string')
            return 'Error'
        current_value = current_value//2
    return total

print(converter(binary_string))