At what age and in what language did you write your first line of code?

I think I was around 12 years old (~1982) when I wrote my first basic program. On paper. Yes, paper. I got infected with the programming virus by a book of a friend of my parents. They had a commodore 64 with a book that belonged to it, with instructions on how to program in basic. I just loved it and started to write my own program on paper. Later - in school - I programmed on a TRS-80 system and even later I got my own MSX computer. Today I am still programming. And I still love it. Even after almost 40 years.

I’d pin it at around 12, and it was HTML.

Maybe not as programmy a language, but my intro was geocities and it’s not too different from what I’m still doing.

HTML at age 12

C. I was 17 when I first used a computer and learnt to switch on a computer. Few months after buying the computer, bought (from Library) a 'Learn C in 24 hours' book by Sams publication and wrote 'Hello world'.

Early 2013 when I was 15. Language was C#.
Started doing that because I liked Redstone in Minecraft a lot and my dad suggested I better learn something more useful 😅

After that I stopped playing Minecraft and started making programs

I was around 11 years old when wrote my first line of PHP in 2001. I used to write modifications (“hacks“ we called them, because we were cool, I guess) for the Burning Board software. Also made styles/templates for it.

I think it was PHP at age 14 (~2009). Around that time, we started using Processing in school in the computer science class. Before that, we had used Scratch, but I don't think that that counts as "programming" 😆 It was a lot of fun, though. I should take a look at it some time...

17: PIC Assembly Language
Which looks something like this...

Start:
     bsf    STATUS,RP0    ; Select Registers at Bank 1
     movlw  0x70
     movwf  OSCCON        ; Set the internal clock speed to 8 Mhz
     clrf   TRISIO        ; Set all General Purpose I/O to output
     clrf   ANSEL         ; Make all ports as digital I/O
     bcf    STATUS,RP0    ; Back to Registers at Bank 0    

It was the BASIC era's helloworld. :)
Same first program on C+4, at age of 12, in 1988.
It was a school computer, no floppy drive, only casette recorder. It took literally minutes to load a program without turbo.

It would have been BASIC on a ZX80 which was a nasty little membrane keyboard thing you attached to the ariel socket on your TV. I was probably around 10-12 years old.

From there I taught myself Pascal which I had to boot up on 3.5" floppy disks on the Cannon XT PC running DOS that my dad had bought to help him do the invoicing for his business. During school holidays I would start programming about 11pm and go to bed at around 7am when my dad got up and kicked me out of his home office.

I write my first line of Basic code when I was 13 on a Amstrad cpc 464 ... 35 years ago 🤯

9 with Rockerfer Basic (it's on pachesoft.com if it's even still up)

My parents were Software Engineers for Lockheed Martin and some other defense contracting agency and actually met through a joint contract in Colorado, so of course they had to get me into CS. I'm now pursuing CS as a profession and I can't thank them enough.

I remember it was 2016 (i was 14) when i copy and paste Java "Hello World" code into Eclipse and had no idea what i was doing. I stop coding until 2018 and came back to Java and then jumped to C++ (Arduino). Now i use JS and loving it!

I learn C language and html,css and javascript at 16 in 2018. Before 16, I just hate computer ,Oh!! forget that my teacher taught us GWBasic language when i was 14. I just hate that because it is beyond my mind :xD. But after come to university, I know what is programming language and learn C Programming then i fell in love with computer and programming languages.

I was 13 years old when I started to write my first website with html, css and javascript (~2007). It was the time, where responsive web design become very popular. I remember that it was called "fluid design".
After that I programmed some websites for my friends and some small companies to get money for it. Then I started around 2010 with PHP to have a backend for all these websites I built. Mostly it was just Wordpress with some template adaptations, but then I discovered Symfony. So I learned a lot about MVC architecture and from that point I got hungry for software-architecture.

Then, 2013 I joined a software company where we programmed in Python. We built a lot of business intelligence stuff with a lot of data science (as it was not related to AI anyhow) stuff. As I started to study computer science in 2013 as well, I could combine my university knowledge with requirements in my job.
I learned so much in this time.
Programming, Computer-Science, Databases, Mathematics, Computer Vision, Concepts, Design Patterns, Software-Architecture, and uncountable more... it's astonishing when I look back.

2018 I changed companies and stayed there for 9 months. Now I am at a really satisfactory company where we implement Go services.