exercism/c/difference-of-squares/README.md

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# Difference of Squares
Welcome to Difference of Squares on Exercism's C Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
The square of the sum of the first ten natural numbers is
(1 + 2 + ... + 10)² = 55² = 3025.
The sum of the squares of the first ten natural numbers is
1² + 2² + ... + 10² = 385.
Hence the difference between the square of the sum of the first ten natural numbers and the sum of the squares of the first ten natural numbers is 3025 - 385 = 2640.
You are not expected to discover an efficient solution to this yourself from first principles; research is allowed, indeed, encouraged.
Finding the best algorithm for the problem is a key skill in software engineering.
## Source
### Created by
- @RealBarrettBrown
### Contributed to by
- @bcc32
- @Gamecock
- @gea-migration
- @h-3-0
- @patricksjackson
- @QLaille
- @ryanplusplus
- @wolf99
### Based on
Problem 6 at Project Euler - https://projecteuler.net/problem=6