title: Add all numbers (in a while loop)
body: <p>so Im practicing coding in python. My question is this "So I make program that add all the number that enter by a user but the output of the program is not the sum of all the numbers that the user enter.
  <img src="https://i.stack.imgur.com/GvOuU.png" alt="This is my code, I don&#39;t know why stackoverflow denied to enter my image."></p>