How to error check a string for numbers?

So I have an input

name = input('Please enter your name:\n', 's');

How can I error check so that a user cannot enter any numbers for it?

[madhan ravi]

What should be the error check ,an example?

[PJ]

If I enter 7 as an input, it should ask the user to enter a valid name

Answer 1

[KSSV]

name = input('Please enter your name:\n', 's');
if isnan(str2double(name))
    fprintf('Input is a string\n')
end

[PJ]

This gives me an error now if I enter a name but it gives me a go if I enter a number. I need it to do the opposite.