Question

MATLAB

Part 1 – randFloatValue.m This function accepts two numbers, lower and upper, and returns a random number in between. The rand() function will be useful here.

Part 2 – getValue.m getValue has three parameters: - prompt: A string that is displayed to the user. This should be passed to your input function. - lower: The lowest number that the user is allowed to input - upper: The highest number that the user is allowed to input This function should pass the prompt (which is a string such as ‘enter a number between 1 and 10’) to the input function. Then determine whether the number that the user entered is between lower and upper, inclusive of lower and upper. If it is not, then ask the user again until a valid number is entered.

Part 3 – getFile.m This function should ask the user to enter a file name (remember the ‘s’ flag with your input function). It should then check to make sure that the file ends in .txt. You will need to use the strcmp function to determine this. Then, if the file name does not end in .txt, the user should be asked until they enter a valid file name.

Part 4 – calcBounds.m calcBounds has two parameters: - a_rate: Rate to be used in the simulation. - var: The percentage that a_rate may vary. This function should calculate two things: - lower_bound: a_rate – variation_amount - upper_bound: a_rate + variation_amount Keep in mind that variation_amount is not the same as var. var is the percentage variation from a_rate for lower_bound and upper_bound. variation_amount is the actual amount that lower_bound and upper_bound differ from a_rate. To find variation_amount, we can multiply a_rate by var/100. We need to divide var by 100 because we need the fraction as a decimal number instead of a percentage. Apply this to your calculations for the upper and lower bounds.

Part 5 – writeFile.m writeFile.m has 4 parameters: - filename: the name of the file that we will be writing to - num_sim: the number of simulations that we want to write to the file - lower: the lowest number of attackers possible - upper: the highest number of attackers possible The algorithm for this function goes as follows: 1. Open the file using filename, with write access. 2. Loop num_sim amount of times 3. Inside each loop iteration, generate a random number using your randFloatValue function. The bounds for randFloatValue are lower and upper. 4. Inside each loop iteration, use fprintf to write the generated random number to the file 5. Close the file.

Answer 1

Program:

Sample output:

Code to copy:

% randFloatValue.m

function r=randFloatValue(lower,upper)

    % find a random value between lower and upper

    r=lower+(upper-lower)*rand(1);

end

Program:

Sample output: