:thumbsup:

Is it because you are saying 5! (factorial). 230 - 220 x 0.5 = 230 - 110 = 120 which is == 5x4x3x2x1 or 5!.

Back in the day I started with a book. I bought books on C then C++ and learned the basics from them. A lot cheaper than boot camps. After that I started taking CS classes at the local college where ever I was stationed at in the evening. Never finished my BS in CS but have been working as a dev for over 20 years now.

I was in the infantry stationed in Italy when the PX (Post Exchange) started selling PC's. I bought a Tandy 286 with dual floppies and took it home. Now what? I found it had gwbasic on the disk. I started 'playing' with it to see what I could do and was hooked from then on.

I am currently employed as a C++ dev on Microsoft operating systems. The oil field services companies still have a lot of work for C++. (I've worked for two so far). But they also have some C# work. I still get calls from recruiters for C++ in the Houston, Tx. area.

My second career. I'm retired Army (11B4P). Went back to school after I got out and have been coding ever since.

I like to read first, then work the samples in the book. From there I start to change the samples to see what happens and what else can be done. How to 'break it' and how to 'fix it'. Then move to more advanced books and repeat.