If you're still at the level of monkdom where your main source of errors is just things that the compiler can catch for you, I would suggest spending that time on reading programming books instead, or thinking about the design of your programs.

Then when you get home, you can put some of the things you've read about into practice.

I recommend

• Design Patterns
• Effective C++
• STL Tutorial and Reference Guide
• Object-Oriented Design Heuristics

If you only read one, make it that last one. It's great.