Question

Consider I have

a = input(value = );
how can I prevent user from enter i and j as the input values. I would like to have a code some thing like tat
if a == any value involves i and j
then break or terminate
and prompt the function a = input(value = ) again.

between I have tired something like this, but it doesn’t work (the error is still coming out and it unable to prompt the second defined input a = input(‘enter again’)), can anybody explain to me where’s the mistake I have done.

if ~isnan(x) || ~isnumeric
    a = input('enter again');
else
    continue
end

I will really appreciate all the help.

Answer 1

try this

a = NaN;
while isnan(a) || ~isreal(a)
   a = input('value=','s');
   a = str2double(a);
end