How do I round double variables in c++

Question

I need to round double variables in my program, but I can't figure out how to do this. For example I need to round 2.845 to 2.90 or 4.0397 to 4.04. Please help! Thanks in advance!

Answer 1

Use set precision.
Read this may help you ..
http://www.cplusplus.com/reference/iomanip/setprecision/