Will my accepted paper appear in conference proceeding without presentation?
The IEEE policy on non-presented papers is as follows:


  Authors are expected to attend the conference in person to present their papers and share their ideas.
  
  To encourage attendance, IEEE recommends that conferences exclude or limit the distribution of any paper that was not presented at the conference. This policy is not mandatory and only applies to conference proceedings where IEEE is the copyright holder.
  
  If authors are unable to attend the conference and present their papers, they should contact the program chair as soon as possible so that substitute arrangements can be made.


That is, it is at the conference organizer's discretion. Some IEEE conferences do pull a paper from the published proceedings if it isn't presented at the conference: for example, the IEEE Signal Processing Society has the policy that papers not presented will not be distributed on IEEEXplore.

The only way to be sure your paper will appear in the conference proceedings is to confirm with the conference organizer.