When comparing Code::Blocks vs Ultimate++, the Slant community recommends Code::Blocks for most people. In the question“What are the best IDEs for C++ on Windows?” Code::Blocks is ranked 1st while Ultimate++ is ranked 17th.
Ranked in these QuestionsQuestion Ranking
Pro Free/Libre/Open Source
Pro Cross platform
Code::Blocks is available for both Windows and Linux, allowing you to use the same IDE across both OSes if you use different machines.
Pro Easy to use
Easy to pick up, for example much easier to include libraries.
Pro Debugger multi-threading support
The debugger supports multi-threaded processes for faster debugging.
Pro Lets you choose the compiler
Code:Blocks lets the developer choose which compiler to use, giving you a higher level of control for on your development workflow.
Pro Visual designer
Pro Easy to learn
The whole framework is easy to learn thanks to multiple tutorials.
Pro Helpful community
Pro Simple to use
The whole framework is easy to use.
Pro Documentation and help tool
Pro Code analyzer
Con It's hard to make the code readable
Due to the problems with indention, it's hard to make the code look nice.
Con Poor code completion
The code completion for Code::Blocks is rather poor compared to other IDEs
Con Strictly C++
Con This is an application development framework not simply a GUI toolkit / library API
It is designed for you to develop your whole application using it, not just your GUI. Most people probably are not really looking for that.