Choice made in menu prints a blank box

Question

Shawn Christensen 2019-1-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/442349-choice-made-in-menu-prints-a-blank-box

回答： Pranjal Priyadarshi 2019-2-8

Part c
% uses the menu command to ask the user wheather
% they hear "Yanny" or "Laurel", then stores their
% answer to the variable D3
first = 'Yanny';
second = 'Laurel';
D3 = menu('Who do you hear?',first,second);
% Part d
% Prints the results of the choice made in the menu
% which was stored in D3
disp(sprintf('D3 = \n%s',D3))

This prints a blank box and stores D3 as 1 or 2 depending on the selection made.

I need it to print Yanny or Laurel not 1,2 or a blank box.

Homework Question:

Write a line of code that shows the variable D3 and its value, without using fprintf.

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Answer 1

Pranjal Priyadarshi 2019-2-8

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/442349-choice-made-in-menu-prints-a-blank-box#answer_360130

In order to get the values of the options instead of the index we can pass the values in a cell array to the menu function. The output can be achieved in the following manner (without using the fprintf function):

This code should do the job for you.

s={'Yanny','Laural'}; 
D3=menu('Who do you hear?', s); 
if(D3 == 0) 
    disp('No choice selected'); 
else 
    disp(sprintf('D3= \n%s',s{D3})); 
end 