Need help using num2str?

I am trying to display the sentence:

The approximate work done is {W} kJ.

(Where W is the calculated work variable) How can I do this using just one line? I'm fairly certain I need to use the num2str command. Thanks in advance!

Right now this is what I have, but I want it to be all one line...

disp('The approximate work done is: ') 
disp(W)
disp('kJ')

Answer 1

[the cyclist]

disp(['The approximate work done is: ',num2str(W),' kJ'])

The way I personally approach constructing things like this is to first write out the sentence without using the variable:

disp(['The approximate work done is: 123 kJ'])

then isolate the numeric piece, using concatenation:

disp(['The approximate work done is: ','123',' kJ'])

and then substitute in the num2str as above.

[Kelsey]

Thank you so so so much! :-)

[the cyclist]

The best form of thank you is accepting the answer. :-)

[Thomas Seers]

Accept the answer Kelsey!