MATLAB: Don’t know why it is showing incorrect

errorMATLABonline_trainingonramptraining

I get an incorrect mark in the task(2) of 13.2 section of Matlab onramp course.Even if i saw the solution in the see solution option and entered the same the error still shows.

the task is given below:

Modify the script so that when the if condition is not satisfied, the following line of code is executed:

disp("The density of " + element …

+ " is " + density)

Best Answer

It will work when you enter the code carefully. For example, if you will enter

disp("The density of" + element...
   + " is " + density )

it will not work but, instead of this enter

disp("The density of " + element...
   + " is " + density )

there is a space after of and it will work.

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That might be checking that the densities that are printed as text when doPlot is 0 exactly match the densities that would be printed by "the code as shown above". The code you're using doesn't exactly match: note that your code doesn't display a space between "of" and the name of the element. Try adding the spacing before and after the element name (as I believe "the code as shown above" does) and see if that allows you to pass the test case.

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Shivaani - I think that all the code is asking you to do is to add another variable called doDisplay and an elseif that would check if this variable is true. If so, then you would plot the densities. So there would be two ways to plot the data - either through the doPlot or with the doDisplay

if doPlot
    plot(density)
    title("Sample Densities")
    xticklabels(element)
    ylabel("Density (g/cm^3)")
elseif doDisplay
    plot(density)
    title("Sample Densities")
    xticklabels(element)
    ylabel("Density (g/cm^3)") 
else
    disp("The density of " + element ...
        + " is " + density)
end

You would need to declare and initialize the doDisplay variable too.

Best Answer

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