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--- notes:cprog:fall2022:projects:sof0 [2022/09/15 03:38] – [BACKGROUND] rspringe
+++ notes:cprog:fall2022:projects:sof0 [2022/09/15 03:50] (current) – [VERIFICATION] rspringe
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 This trick works with any multiple of 5 up to three digits (5 to 995), and can be done without much difficult math or a calculator.
+Let's take an example number: 105. To calculate the square of 105, we can split the number into two parts, then perform a set of calculations on each part, in order to get our answer.
+The two parts we want to split our number into are as follows:
+  * The "back" part of the number, which is the 5 at the end of the number (this will be the case for every number).
+  * The "front" part of the number, which is the digits before the 5. (In this case, it is 10).
+Calculating the back portion is easy, we just need to multiply 5 by itself to get its square:
+* 5 = 25
+To calculate the front portion, we take our number (10), add one to it, and multiply these two values together to get the front portion of the answer:
+* (10 + 1) = ?\\
+* 11 = ?\\
+* 11 = 110
+Finally, we bring the two portions back together to get our answer:
+   25\\
+\\
+* 105 = 11025
 =====SPECIFICATIONS=====
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 =====VERIFICATION=====
+In the project files that you grabbed, there is a reference program, "ref.sof0.x86_64", that you can run to verify your program.
+This reference program will run a version of sof0 similar to what you will be creating, where you can enter a multiple of 5, and it will output its square.
+You can use this reference to check the output of the program you will be writing, along with the format of the output.

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