Some issues with a basic while loop problem, help appreciated

This code is supposed to ask the user for several values, and stop once the product of these values has exceeded 500. It should not accept negative values. It should then display the product, the number of values entered, and a list of those values.

One thing it does not do is display the list of values. The way it is set up now, it will only show the last value. How can I fix this?

Secondly, how do I make matlab ignore a negative input, but continue the loop with the previously entered values?

SCRIPT BELOW

product=1;
n=0;

while product <= 500
num=input('Enter a positive number ');
    if num < 0
fprintf('This number is negative, enter another number \n');
    end
n=n+1;
product=product*num;
end
fprintf('Product =  %d \n',product)
fprintf('Numbers entered =  %d \n',n)
fprintf('List of numbers = %d \n', num);

Thank you for your help

Answer 1

[Matt Fig]

Try this out.

product=1;
n=0;

while product <= 500
    num(n+1)=input('Enter a positive number ');

      if num(n+1) < 0
          fprintf('This number is negative, enter another number \n');
      else
          product = product*num(n+1);
          n = n+1;        
      end
  end

home
fprintf('\n\tProduct =  %d \n',product)
fprintf('\tNumbers entered = %d\n\tList of numbers = ',n)
fprintf('%d,',num)
fprintf('\b\n\n')

[Vidar]

This did the trick, thank you very much!