How to set a string as a CODE in script file?

Legend CODE

Sum SU

Difference DI

How can I set this code(SU and DI) so that the user will only input these codes and will work the other lines?

Answer 1

[Star Strider]

I am not certain what you are actually asking.

If you want the user to enter specific values and assign them in the code to specific variables, I prefer using the inputdlg function. That gives the script control of the variable assignments.

[Ben Jan]

The user will pick a method from the list by typing the correct code. The program displays an error message when an invalid code is entered and prompts the user to re-enter the correct code.

[Star Strider]

Use listdlg instead. That should work.

Answer 2

[Walter Roberson]

validcodes = {'SU', 'DI'};

while true
    choice = input('Enter a code: ', 's');
    if strcmpi(choice, validcodes); break; end
    fprintf('Bad code, try again\n');
end

But have you considered using menu() ?