Depends on what qualifies as a line of code: If LOGO qualifies then it was 7 If BASICA/QBASIC qualifies, then my age was 9 Wrote for C++ when I was 11 Wrote for VB when I was 13 All on a 40/66/100MHz 486 with 8MB and later 16MB RAM. ;P
Unless of course you're studying quantum mechanics, oh, wait...
"If you don't fail at least 90 percent of the time, you're not aiming high enough." Alan Kay.