Overview

This lab is designed to give you practice with loops, characters, and arithmetic. Your program will take a hexadecimal or binary number string as an input and print out its decimal value. PLEASE MAKE SURE THAT I CAN COPY AND PAYSTE THE CODE. Also don't use int$()!!$

Submission Instructions

Specification

The program will provide a looping menu that invites the user to choose from a menu of number string decoding options. It must provide options to convert hexadecimal and binary into decimal notation and binary to hexadecimal for full credit.

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $1$

Based on the user$$s selection, the program should prompt the user for the appropriate input:

Please enter the numeric string to convert: $0$xbadf$00$d

$...$ and should display the result of the string decoding $/$ encoding:

Result: $195948557$

It should then display the menu again. This should repeat until the program is terminated.

This project must not make use of existing hexadecimal and$/$or binary conversion routines

built into the Python language; instead, you must do the conversion using your knowledge of binary and hexadecimal numbering systems. It may be helpful to think of the ASCII values of hexadecimal numbers when working on this project!

Program Methods

Your program must provide and use the following methods. Each method signature must be matched and it must behave as described. Methods should not display anything on the screen!

def hex$\_$char$\_$decode$($digit$)$

Decodes a single hexadecimal digit and returns its value.

def hex$\_$string$\_$decode$($hex$)$

Decodes an entire hexadecimal string and returns its value.

def binary$\_$string$\_$decode$($binary$)$

Decodes a binary string and returns its value.

def binary$\_$to$\_$hex$($binary$)$

Decodes a binary string, re$-$encodes it as hexadecimal, and returns the hexadecimal string.

NOTE: It is common to display hexadecimal numbers with $0$x$$ as the prefix $($e$.$g$.,$ the number FFFFFFFF is represented as $0$xFFFFFFFF$.$ Your program must be able to convert a hexadecimal string into a number regardless of whether it is prefixed with $0$x$.$ Additionally, it must handle the binary prefix $0$b$.$ It is also common for hex numbers to be typed in lowercase $($e$.$g$.,0$xffffffff$)$; your program

must handle upper$-$ and lower$-$case letters.

Sample Submission Output

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $1$

Please enter the numeric string to convert: $0$x$4321$

Result: $17185$

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $1$

Please enter the numeric string to convert: fFfFfFfF

Result: $4294967295$

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $2$

Please enter the numeric string to convert: $1010$

Result: $10$

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $2$

Please enter the numeric string to convert: $0$b$11111111$

Result: $255$

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $3$

Please enter the numeric string to convert: $111110000001$

Result: F$81$

Decoding Menu

$-------------$

$1.$ Decode hexadecimal

$2.$ Decode binary

$3.$ Convert binary to hexadecimal

$4.$ Quit

Please enter an option: $4$

Goodbye!