Answered: Octal numbers have a base of eight and…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

PYTHON!!!!

Octal numbers have a base of eight and the digits 0–7. Write the scripts octalToDecimal.py and decimalToOctal.py, which convert numbers between the octal and decimal representations of integers.

These scripts use algorithms that are similar to those of the binaryToDecimal and decimalToBinary scripts developed in the Section: Strings and Number Systems.

An example of octalToDecimal.py input and output is shown below:

Enter a string of octal digits: 234

The integer value is 156

An example of decimalToOctal.py input and output is shown below:

Enter a decimal integer: 27

Quotient Remainder Octal

3, 3, 3

0, 3, 33

The octal representation is 33

Programs convert octal numbers to decimal numbers and decimal numbers to octal numbers.

Checks:

Test Case

Dec to Oct 1773

Input:

1019

Results:

1773

Test case:

Oct to Dec 234

Input:

234

Results:

156

Test Case:

Dec to Oct 5

Input:

Results: 5

Test Case:

Dec to Oct 27

Input:

Results: 23

Test Case:

Oct to Dec 5

Input:

Results:

Test Case:

Oct to Dec 1773

Input:

1773

Results:

1019

Binary to Decimal code:

"""

File: binarytodecimal.py

Converts a string of bits to a decimal integer.

"""

bstring = input("Enter a string of bits: ")

decimal = 0

exponent = len(bstring) - 1

for digit in bstring:

decimal = decimal + int(digit) * 2 ** exponent

exponent = exponent - 1

print("The integer value is", decimal)

Decimal to Binary code:

"""

File: decimaltobinary.py

Converts a decimal integer to a string of bits.

"""

decimal = int(input("Enter a decimal integer: "))

if decimal == 0:

print(0)

else:

print("Quotient Remainder Binary")

bstring = ""

while decimal > 0:

remainder = decimal % 2

decimal = decimal // 2

bstring = str(remainder) + bstring

print("%5d%8d%12s" % (decimal, remainder, bstring))

print("The binary representation is", bstring)

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