Try it this way:
% User is asked to enter numbers. Once they enter a 0, the amount of numbers entered prior is being displayed.
n = 9; % Whatever the maximum times you want to ask is.
count = 0;
for k = 1 : n
usersResponseS = input('Please enter a number: ', 's');
usersResponse = str2double(usersResponseS);
if isnan(usersResponse)
fprintf('%s is not a valid response. Enter a number, not a letter.\n', usersResponseS)
elseif usersResponse ~=0
% Increment count of valid numbers.
count = count + 1;
% Log this valid number to an array.
numbers(count) = usersResponse;
% fprintf("You have entered %d valid numbers.\n", count);
else
fprintf("You have entered %d valid numbers.\n", count);
break;
end
end
