For me, it was The Transactor when I was in high school and later the C/C++ Users Journal. I clearly remember when I felt like I was ready for the latter, after

For me, it was The Transactor when I was in high school and later the C/C++ Users Journal. I clearly remember when I felt like I was ready for the latter, after I’d been programming professionally for a few years. It must have been towards the end of that magazine’s life. It later got merged into Dr Dobb’s, I think.