MATLAB Project

Project 2: Number Base Converter

• 25 points

Objectives

 Write a program that converts decimal, hex, and binary into integers and vice versa.  Practice functions, strings, loops, and logic.

Assignment

Write a program that allows numbers to be entered in decimal (base 10), hexadecimal (base 16), or binary (base 2), and then prints out the number again in all three bases.

To distinguish between different bases we'll say that hexadecimal numbers should always be preceded by a "$" and binary numbers by a "%". Other numbers are assumed to be decimal.

When the program is run it should repeatedly allow a number to be entered and then print it out in all three bases until "q" is typed in. Here's an example of how your program should operate:

Enter #: 16

Decimal: 16

Hexadecimal: 10

Binary: 10000

Enter #: %1111

Decimal: 15

Hexadecimal: F

Binary: 1111

Enter #: $6D

Decimal: 109

Hexadecimal: 6D

Binary: 1101101

Enter #: q

**Test your program for each of the following numbers: 16, %1111, $6D. **Include a copy of the results in the project report.

Approach

A good way to structure this program is to read in each "number" as a string of characters, look at the first character to determine what kind of number it is (hex “$”, binary “%”, decimal “ ”), and then call an appropriate function to convert the string into a hex, binary, or decimal number Then, print those numbers out next to each of their corresponding bases.

You will have to use these two functions and their variations to convert between bases:

dec2bin(integer input); % e.g. “4” → “0100”

hex2dec(string input); % e.g. “1D” → “14”

Also, use one or more of the following functions to convert from a string to a number and vice versa:

str2num(string input);

num2str(numeric input);

Some tips:

 Remember to use the Top-Down Design Process.  Before attempting to write the program in MATLAB, write down the algorithm that the

program will follow. This will help you to understand the execution flow of the program as well as make it easier when you are trying type the syntax. Remember, an algorithm is a sequence of precise instructions which leads to a solution.

 When asking for an input that will contain more than just numbers, be sure to define that input as a string.

 This project seems tougher at first than it actually is. Once you get one of the

if/elseif statements working, the others are just simple variations. What type of loop

will you use to execute code repeatedly until some condition is no longer true?

Project Report

The final step of this assignment is to create a Project Report (Word document) in the format

you did for previous CS122 (lecture) Projects.

The Project Report should contain the following information:

1. Purpose Describe the purpose of your program.

2. Approach Describe your approach to completing this project.

3. Methods Mathematical processes followed.

4. Implementation Include a copy of your program source code “m” file. Use comments in your code to explain

your work.

5. Conclusions Describe any significant problems or challenges you encountered and how you solved them.

Submit your results (Project Report) in the correct place in Blackboard Learn by the due date.