how to validate the built in input function

Hi i have an input function that has a choice for 1 to be true and 0 to be false. im wondering how to validate this function so that if anything other then 0 or 1 is entered the loop will print that it is not a correct value if 0 or 1 are not entered

my code so far is

enter1 = false;

enter = true;

while (enter || ~valid)

enter = false;

choice = input('Would you like to play No Thanks? Enter 1 for yes and 0 for no!==>');

%determine if input is valid

valid = (choice ==1 || choice ==0);

if ~valid

fprintf('The entered number is not 1 or 0.Please enter 1 or 0\n')

end

end

[JESUS DAVID ARIZA ROYETH]

what you did is correct, another way could be:

enter=true;
while enter
    choice = input('Would you like to play No Thanks? Enter 1 for yes and 0 for no!==>');
    enter = not((choice ==1 || choice ==0));
    if enter
     fprintf('The entered number is not 1 or 0.Please enter 1 or 0\n')
    else
        break;
    end  
end

[Ryan Littlejohn]

thanks!

Answer 1

[Matt Bowring]

You could add something like this:

if choice ~= 1 || choice ~= 0:
    error('Please enter either a 1 or 0.')
end

If you don't want your script to return an error, but rather 'print' out a statement, you could also do this:

if choice ~= 1 || choice ~= 0:
    disp('Please enter either a 1 or 0.')
end