A good answer might be:

A counting loop.

Addition Problem

This program uses a common style of input file. Here is an example input file: 

5
124
-89
97
301
-39
The first number, "5", is the count of how many numbers follow, one number per line. The "5" is not to be added into the sum.

QUESTION 3:

(Thought question: ) What is the advantage of this style? Click here for a

Click Here after you have answered the question