Scratch

Hi I am new to creating algoritms
Can someone help me in creating a computer algoritm which suits the following criteria
The expected behavior of the program is as follows.

1.The program informs the user that it will compute the sum of a 0-terminated sequence of numbers.
2.The program prompts the user for each number.
3.The user inputs each number, one at a time.
4.Each number given by the user is added to a running total.
5.When the user gives 0 as input, the program finishes by displaying "The sum is " followed by the sum of all numbers entered by the user.

Write an algorithm to compute the sum of a 0-terminated sequence of numbers given by the user.


Thanks