Question

MATLAB

You've recently looked at 'while' loops in Matlab. Break statements can be contained within 'while' loops to exit the loop early. Look at the following example code:

x=-10;

while x<0

      x=x+2;

     if x == -2

            break;

      end

end

Without the break statement, the while loop would usually add 2 to x=-10 until x=0, and then produce a final answer of x=0 at the end of the loop. Now, the loop ends prematurely when the value of -2 is given to x.

Following this example. come up with a code while loop that calculates multiple powers of 2, i.e. (2^1, 2^2, 2^3...). Your while loop should calculate up to 2^30

Provide a break statement that stops the code at the value 1048576, which is equal to 2^20  

To complete this quest, answer the following questions in the submission box below.

• Upload a word document of your code that contains a while statement calculating 2^30, with a break statement that exits the while loop at 2^20.
• Keep in mind that the screenshot must also include a timestamp showing when you completed the quest.

(For more information see the "Engineering Tools - MATLAB" chapter from Pathfinder)

Answer 1

Code:

x = 2;

while x ~= 2^30

    x = x*2;
    if x == 2^20
        break;

    end
end
 %to verify our code
disp(x);

Output:

1048576